All NexaCalc calculators

Calculate body mass index from weight and height.

Estimate basal metabolic rate from body details.

Estimate mortgage payment, PITI, closing costs, and amortization.

Calculate equal monthly instalment or solve EMI variables.

Calculate loan payment, interest, fees, extra payments, and schedule.

Estimate personal-loan payment, fees, net disbursal, and flat-rate comparison.

Estimate auto-loan payment from vehicle price, trade-in, taxes, fees, and rebates.

Estimate home-loan EMI, pre-EMI interest, staged disbursement, and repayment.

Estimate education-loan funding, moratorium interest, capitalization, and EMI.

Compare simple, flat-rate, and reducing-balance loan interest.

Estimate payoff time, remaining interest, extra-payment savings, and months saved.

Compare loan offers by payment, interest, fees, modeled cost, and break-even.

Generate amortization schedule, annual summary, balance analysis, and CSV.

Calculate simple interest, final amount, principal, rate, time, or date-based interest.

Calculate front-end and back-end DTI from gross income, housing, debt, and proposed payment.

Create a smallest-balance debt payoff schedule with rollover, interest, fees, and comparison.

Create a highest-APR debt payoff schedule with rollover, interest, fees, and comparison.

Plan monthly income, expenses, savings, debt goals, surplus, and budget-framework comparisons.

Convert gross salary between annual, monthly, biweekly, weekly, daily, and hourly equivalents.

Convert hourly wage to weekly, monthly, biweekly, and annual gross pay with overtime.

Calculate new gross pay, raise amount, nominal raise, and inflation-adjusted raise.

Convert supported currencies with ECB reference rates or a manual exchange rate and fees.

Analyze direct, inverse, implied, cross, bid/ask, spread, and fee-adjusted exchange rates.

Calculate stock profit or loss from shares, buy price, sale price, fees, dividends, and return.

Calculate weighted average stock purchase cost, total shares, fees, and unrealized return.

Calculate dividend yield, yield on cost, annual income, required shares, and required investment.

Calculate generic capital gain or loss from adjusted basis, sale proceeds, selling expenses, holding period, and a user-rate tax estimate.

Estimate rental property ROI from acquisition cash, rent, vacancy, expenses, financing, appreciation, sale proceeds, and IRR.

Plan rental income, expenses, cash flow, financing, and holding-period assumptions.

Estimate gross and net rental yield from rent, property value, and operating expenses.

Estimate capitalization rate from net operating income and property value.

Estimate annual cash return compared with upfront cash invested in a property.

Estimate a rent budget from income, debt, savings goals, and monthly expenses.

Split rent between roommates by room size, income share, or custom weights.

Estimate a home purchase budget from income, debt, down payment, rate, and housing costs.

Estimate down payment amount, savings gap, and purchase-price percentages.

Estimate annual and monthly property tax from assessed value and a user-entered rate.

Compare property prices by square footage using consistent unit assumptions.

Calculate revenue, gross profit, operating profit, net profit, margins, and profit per unit.

Calculate profit margin from selling price and cost, with markup comparison.

Calculate gross profit and gross margin from revenue and cost of goods sold.

Calculate markup on cost, equivalent margin, and target markup selling price.

Calculate final price, savings, stacked discounts, fixed coupons, and reverse discount values.

Add or extract user-entered sales tax with inclusive, exclusive, additive, and compounded modes.

Add or extract user-entered GST and show generic, CGST/SGST, CGST/UTGST, or IGST presentation.

Add or extract user-entered VAT and compare output VAT with eligible input VAT entered by the user.

Calculate invoice totals with line items, discounts, mixed tax rates, shipping, charges, and CSV export.

Calculate break-even units, revenue, target-profit volume, margin of safety, and weighted product mix.

Solve cost price from selling price, margin, markup, profit amount, or landed-cost assumptions.

Calculate required selling price from cost, margin, markup, target profit, discounts, and fees.

Calculate gross revenue, net revenue, reductions, tax exclusion, growth, target gap, and required units.

Calculate AOV, required revenue, required orders, required AOV, units per order, and AOV change.

Estimate transactional, direct, or retention-adjusted CLV with net CLV and CLV-to-CAC context.

Calculate blended CAC, channel CAC, acquisition cost, payback, and CLV-to-CAC ratio.

Calculate customer churn, inferred lost customers, recurring revenue churn, and annual-equivalent churn.

Calculate retained customers, retention rate, churn complement, repeat-customer rate, and annual equivalent.

Calculate conversion rate, required conversions, required traffic, value per conversion, and uplift.

Calculate multi-stage lead funnel conversion, stage drop-off, overall conversion, and required leads.

Calculate return on ad spend, contribution ROAS, break-even ROAS, target revenue, and max spend.

Calculate advertising contribution, total campaign investment, net ad profit, ROI, and ROAS comparison.

Calculate cost per thousand impressions, viewable CPM, target cost, target impressions, and campaign CPM.

Calculate cost per click, target spend, target clicks, break-even CPC, and campaign CPC comparison.

Calculate cost per acquisition, target CPA, required acquisitions and implied CPA from CPC or CPM.

Calculate click-through rate from clicks and impressions, plus target clicks and weighted campaign CTR.

Calculate inventory turnover, average inventory, DIO and target inventory requirements.

Calculate reorder point from demand, lead time, safety stock and available inventory.

Estimate safety stock from service level, demand variability and lead-time variability.

Calculate economic order quantity, orders per year, average inventory and relevant cost.

Estimate gross pay, net pay and employer cost from user-entered payroll assumptions.

Estimate a freelance rate from income target, billable time, costs, and buffer assumptions.

Solve hourly rate, earnings or hours from entered pay and time values.

Estimate project cost from labor, materials, overhead, contingency, and margin assumptions.

Calculate service price from cost, target margin, markup, fees, discounts and package assumptions.

Estimate recognized or billed subscription revenue from plan rows and billing frequency.

Calculate monthly recurring revenue from SaaS plans, billing cycles, discounts and MRR movements.

Calculate annual recurring revenue from MRR, SaaS plan rows, ARR movements and target ARR.

Calculate SaaS customer churn, gross MRR churn, net MRR churn, GRR, NRR and annualized retention.

Estimate SaaS LTV, finite-horizon value, LTV:CAC ratio and CAC payback from subscription metrics.

Calculate compound growth with contributions, fees, loads, and inflation.

Calculate daily compounding over exact day intervals.

Project investment value with contributions, fees, step-up, withdrawals, and inflation.

Project monthly SIP and step-up SIP scenarios.

Project one-time investment value with fees, loads, and inflation.

Calculate mutual fund return from NAV, units, distributions, and loads.

Calculate compound annual growth rate from beginning and ending values.

Calculate ROI, profit, proceeds, and optional annualized ROI.

Convert nominal annual rate to APY or APY to nominal rate.

Estimate loan APR from note rate, fees, and payment timing.

Calculate future value of a present sum, annuity, or combined scenario.

Calculate present value of a future sum, annuity, or combined scenario.

Discount periodic project cash flows to net present value.

Solve IRR for periodic cash flows and disclose multiple-root cases.

Estimate future cost, purchasing power, implied inflation, and real return.

Estimate retirement corpus, gap, drawdown, and required contribution.

Solve required monthly savings for a retirement target.

Estimate pension income from defined-benefit or corpus payout assumptions.

Calculate fixed-period annuity payment, present value, and future value.

Estimate fixed deposit maturity value and interest.

Estimate recurring deposit maturity and required installment.

Solve required monthly savings for a financial goal.

Estimate emergency fund target from essential expenses.

Estimate credit-card payoff time, interest, fees, and target payment.

Estimate daily calorie needs from basic personal inputs.

Estimate total daily energy expenditure from activity level.

Compare adult BMI-based healthy-weight range and common ideal weight formulas.

Estimate body fat percentage, fat mass, and lean body mass.

Estimate daily hydration needs with transparent assumptions.

Calculate protein, carbohydrate, and fat targets from calories or body weight.

Calculate multiple bedtime and wake-up options from adjustable sleep-cycle assumptions.

Estimate complete sleep-cycle counts, partial time, and estimated cycle boundaries.

Calculate bedtime, wind-down start, and sleep onset from a required wake time.

Plan wake-up times from bedtime, sleep-now time, cycles, or target duration.

Calculate nap wake time or reverse-plan a nap start with editable nap presets.

Estimate sleep shortfall or surplus across multiple days with arithmetic distribution.

Calculate time in bed, estimated sleep duration, deductions, and 24-hour sleep total.

Total baby night sleep and naps with age-reference context and safe-sleep notes.

Plan bedtime and wake time around school or class start, commute, and preparation.

Plan main sleep windows around day, evening, or night shifts with fatigue warnings.

Plan bedtime, wake time, commute, and morning preparation around office start time.

Estimate snow-day chance from winter weather, road, timing, alert, and school-context factors.

Estimate school closure chance from snow, ice, road risk, alerts, and transportation context.

Compare on-time, delay, and closure scenarios from morning hazards and recovery.

Estimate ice-day risk from freezing precipitation, road ice, temperature, visibility, and alerts.

Calculate wind chill from air temperature and wind speed using the standard formula.

Convert liquid water equivalent to snow depth, reverse snow to water, and estimate snow volume.

Estimate icy-road risk from surface temperature, moisture, road type, treatment, and alerts.

Estimate practical weather risk for school commutes, road travel, walking, events, or general planning.

Use a transparent snow-day predictor with weather factors, local context, and confidence.

Compare English, Hebrew, Greek, and modern letter-value systems.

Calculate English x6 values and compare related Latin ciphers.

Calculate Hebrew standard, final-letter, ordinal, and reduced values.

Calculate Greek isopsephy and ordinal word values.

Calculate A1Z26 word values with letter and word subtotals.

Calculate the modern Jewish Gematria Latin-letter cipher.

Compare phrase values, equal totals, and target-number differences.

Calculate recreational name and birth-date numerology numbers.

Compare Pythagorean and Chaldean name-number values.

Calculate standard, Unicode, and custom word-value mappings.

Find percent of a number, part of whole, increases, decreases, and reverse percentages.

Calculate signed percentage change from an original value to a new value.

Calculate symmetric percentage difference between two values.

Add, subtract, multiply, and divide fractions, decimals, mixed numbers, and repeating decimals.

Convert fractions to terminating or repeating decimals with cycle detection.

Convert finite, scientific, and repeating decimals to exact or approximate fractions.

Simplify ratios, scale equivalent ratios, and divide totals across ratio parts.

Solve missing values in direct and inverse proportions.

Calculate arithmetic average and solve one missing value for a target average.

Find the median from an exact numeric list after sorting.

Find one mode, multiple modes, or no mode from a normalized number list.

Round decimals to places, significant figures, powers of ten, or increments.

Convert numbers to scientific notation, engineering notation, and decimal form.

Calculate integer and fractional powers with exact rational output where practical.

Calculate nth roots with exact perfect-root detection and decimal approximations.

Calculate square roots, perfect squares, simplified radicals, and approximations.

Calculate cube roots, perfect cubes, simplified radicals, and approximations.

Calculate common, natural, binary, and custom-base logarithms.

Calculate inverse logarithm values for base 10, e, 2, or a custom base.

Calculate factorials, digit counts, and trailing zeros for nonnegative integers.

Check whether a number is prime and find nearby or ranged primes.

Find prime factors, exponents, divisor count, and reconstruction.

Calculate the greatest common divisor for two or more integers.

Calculate the least common multiple for two or more integers.

Calculate Euclidean modulo, quotient and remainder, congruence, powers, and modular inverses.

Calculate absolute value, distance between values, and simple absolute-value equations.

Convert integer and fractional values between bases 2 through 36.

Calculate binary arithmetic, conversion, bitwise operations, shifts, and signed values.

Calculate hexadecimal arithmetic, conversion, bitwise operations, shifts, and signed values.

Calculate octal arithmetic, conversion, bitwise operations, shifts, and signed values.

Calculate complex arithmetic, conjugates, powers, magnitude, and principal argument.

Calculate exact matrix addition, subtraction, multiplication, scalar products, transpose, power, and trace.

Calculate exact determinants for square matrices with rational entries.

Calculate exact inverse matrices with Gauss-Jordan elimination and singularity detection.

Solve one-variable linear equations with safe parsing, fractions, identity, and no-solution cases.

Calculate quadratic roots, discriminant, vertex, axis, and complex-root cases.

Calculate polynomial operations, evaluation, division, derivatives, factors, and supported roots.

Solve linear systems with exact RREF, rank, unique, infinite, and inconsistent classifications.

Solve supported one-variable inequalities with interval notation and number-line output.

Calculate general 2D and 3D geometry results with unit conversion and formula notes.

Solve triangle sides, angles, area, perimeter, classification, inradius, and circumradius.

Calculate circle radius, diameter, circumference, area, arcs, sectors, chords, segments, and annulus area.

Solve rectangle length, width, area, perimeter, diagonal, aspect ratio, and square checks.

Calculate area for common 2D shapes with square-unit conversion.

Calculate perimeter or circumference for common 2D shapes with unit conversion.

Calculate volume for common solids with cubic-unit conversion.

Calculate total and lateral surface area for common solids with square-unit conversion.

Calculate slope from two points or rise/run with line forms, angle, grade, and vertical-line handling.

Calculate exact 2D, 3D and n-dimensional Euclidean coordinate distance with squared distance and radical output.

Find exact coordinate midpoints, missing endpoints and internal section points in 2D, 3D or bounded n-dimensional mode.

Convert length and distance units using exact metric, international inch, foot, mile and nautical mile definitions.

Convert everyday body, package and scale weight values while clearly separating mass-equivalent units from force units.

Convert SI, metric and engineering mass units with pound-mass and ounce-mass labelled separately from force.

Convert absolute temperatures or temperature intervals across Celsius, Fahrenheit, kelvin and Rankine.

Convert common metric, international, US customary and Imperial area units with squared length definitions.

Convert volume and capacity units with US customary and Imperial liquid units clearly separated.

Convert speed units such as m/s, km/h, mph, ft/s and knots without solving speed from distance and time.

Convert fixed time-duration units, from nanoseconds through weeks, without treating calendar months or years as fixed units.

Convert pressure units while keeping gauge and absolute pressure context separate from pure unit conversion.

Convert energy units and keep thermochemical calories, International Table calories, food Calories, watt-hours and BTU definitions labelled.

Convert power units and distinguish mechanical, metric and electrical horsepower definitions.

Convert force units while keeping mass units such as kilograms separate from kilogram-force.

Convert density units for materials, liquids and engineering notes without trying to identify the material itself.

Convert common angle units and see exact pi-style labels for common degree-to-radian results.

Convert frequency units and show the matching period in seconds per cycle when the frequency is positive.

Convert fuel economy and fuel consumption formats while keeping mpg, km/L and L/100 km direction clear.

Convert digital storage units while keeping decimal prefixes and binary prefixes separate.

Convert network and storage throughput units and see a theoretical 1 GiB transfer-time estimate.

Convert recipe volume and mass units, with ingredient density used when crossing between cups and grams.

Convert centimeters to inches with an exact inch definition, clear formula, quick table and result-driven ruler visual.

Convert inches to centimeters for dimensions, labels and cross-system measurement checks using the exact inch definition.

Convert feet to meters with exact international foot definitions for dimensions, distances and height-like measurements.

Convert meters to feet for metric dimensions that need an international-foot equivalent and rounded display output.

Convert kilograms to pounds as everyday mass-equivalent scale units without body-health interpretation or force-unit claims.

Convert pounds to kilograms for scale values, shipping values and neutral mass-equivalent everyday measurements.

Convert Celsius temperatures to Fahrenheit with affine temperature handling and a dual-scale thermometer visual.

Convert Fahrenheit temperatures to Celsius with offset-aware calculation and visible freezing and boiling references.

Convert liters to gallons and choose US liquid or Imperial gallons so the result is never ambiguous.

Convert gallons to liters with an explicit US liquid or Imperial gallon selector and exact litre definitions.

Convert international miles to kilometres with exact metric distance output for travel, routes and education.

Convert kilometres to international miles with exact mile definitions and a quick table for common travel distances.

Convert miles per hour to kilometres per hour using exact mile and hour definitions, with a supporting metres-per-second value.

Convert kilometres per hour to miles per hour by deriving the reverse factor from the exact international mile definition.

Convert bar to pounds per square inch while keeping pressure-unit conversion separate from gauge or absolute pressure assumptions.

Convert pounds per square inch to bar through pascals while keeping gauge pressure and absolute pressure context visible.

Convert kilowatts to horsepower while choosing the horsepower definition so the result is never an unlabeled hp value.

Convert horsepower to kilowatts with an explicit horsepower-type selector and watt-based calculation.

Convert joules to a selected calorie definition so small calories and food Calories stay separate.

Convert calories to joules after selecting the calorie definition, including food Calories as kilocalories.

Calculate exact calendar age from a birth date to a reference date, including total days and leap-day birthday handling.

Add or subtract calendar years, months, weeks and days from a start date with clear month-end rules.

Find the calendar difference between two dates, including completed years, completed months and remaining days.

Count days between two dates using elapsed or endpoint-inclusive conventions, with signed output when needed.

Count, add or subtract business days using custom weekend days and optional holiday dates.

Count working days for a custom weekly schedule and estimate working hours from hours per day.

Calculate elapsed time between two entered date-times and see total days, hours, minutes and seconds.

Find the difference between two clock times, including shifts or events that cross midnight.

Convert mixed duration parts into total hours, or add and subtract two duration blocks.

Convert mixed duration parts into total minutes, or add and subtract two duration blocks.

Convert mixed duration parts into total seconds, or add and subtract two duration blocks.

Calculate the static time remaining until a target date and time from the current date and time you enter.

Calculate a tip by percentage or custom amount, include tax when needed, and split the final bill among people.

Divide a bill among participants using equal, weighted, percentage or itemized allocation, with rounded shares that reconcile to the total.

Estimate trip fuel use and journey cost from distance, efficiency, fuel price, tolls, parking and travellers.

Calculate real fuel consumption and efficiency from distance travelled and fuel used, then compare common output formats.

Calculate mileage from start and end odometer readings or a trip distance, fuel added and optional fuel price.

Estimate a trip budget from transport, fuel, lodging, meals, activities, permits, baggage, other costs and contingency.

Estimate recurring commute costs from distance, fuel, tolls, parking, maintenance, transit fares and workdays.

Estimate electricity usage and bill cost from direct kWh or power, hours, tariff blocks and fixed charges.

Estimate a water bill from meter readings or direct usage, flat or tiered rates, sewer charges and fixed fees.

Estimate household or connection data usage from streaming, calls, browsing, downloads and custom activity rows.

Track a mobile data plan allowance, current usage, average burn rate, projected overage and daily budget.

Estimate battery runtime from capacity, voltage, load, usable capacity, efficiency, reserve and optional duty cycle.

Estimate how long a battery or device may take to charge from one charge level to another.

Estimate household appliance energy use and cost from power rating, usage time, quantity, duty cycle and standby use.

Calculate basic room area, perimeter, volume and flooring allowance from room dimensions.

Estimate paintable wall or ceiling area and approximate paint quantity from room dimensions, openings, coats and coverage.

Estimate TV size or viewing distance from field-of-view geometry and aspect ratio.

Calculate physical screen width, height, area and optional pixel density from diagonal, aspect ratio and resolution.

Simplify aspect ratios, calculate missing dimensions and resize width and height proportionally.

Calculate pixel count, megapixels, print size, aspect ratio and estimated uncompressed image file size.

Estimate how long a file download may take from file size and download speed.

Estimate how long a file upload may take from file size and upload speed.

Estimate file size from text characters, raw image dimensions, audio/video bitrate or generic storage values.

Generate random integers or decimals from an entered range with optional uniqueness, sorting and deterministic seed mode.

Generate random passwords, passphrases or PINs locally from selected length, character categories and security options.

Generate a local QR code visual from text, URL, email, phone, SMS or Wi-Fi payload settings.

Generate local barcode visuals for Code 128, Code 39, EAN-13 and UPC-A values with check digit handling where applicable.

Count words and related text statistics locally, including sentences, paragraphs, reading time, speaking time and keywords.

Count characters, spaces, graphemes, code points, UTF-16 code units, UTF-8 bytes, words and line breaks locally.

Estimate reading time from pasted text or direct word count, with adjustable reading speed, speaking speed and page estimate.

Calculate speed, distance or time from distance-time motion values with common speed units.

Calculate average velocity from displacement and time, including direction or 2D coordinate components.

Calculate acceleration, final velocity and constant-acceleration distance from motion inputs.

Calculate force, mass or acceleration using Newton's second law with SI and customary units.

Calculate physical weight force from mass and gravitational acceleration, or recover mass from weight.

Calculate mechanical work from force, displacement and angle, with joule and energy-unit outputs.

Calculate physics energy from work, power-time, or heat-energy relationships with common units.

Calculate power from work and time, energy and time, or force and velocity with common power units.

Calculate linear momentum from mass and velocity, or rearrange for velocity.

Calculate impulse from force and time, change in momentum, or average force.

Calculate kinetic energy from mass and speed, or rearrange the formula for speed.

Calculate gravitational or spring potential energy from mass, gravity, height, spring constant and displacement.

Calculate static or kinetic friction force from coefficient, normal force, mass, gravity and incline angle.

Calculate pressure from force and area, or rearrange pressure to solve force using SI and common pressure units.

Calculate density from mass and volume, or rearrange density to solve mass or volume.

Calculate buoyant force from fluid density, displaced volume and gravity using Archimedes' principle.

Calculate frequency from period, cycles over time, or wave speed and wavelength.

Calculate wavelength from wave speed and frequency, including sound and radio wavelength examples.

Calculate wave speed from frequency and wavelength with common speed and frequency units.

Calculate sound intensity, decibel level, or intensity from dB using a reference intensity.

Calculate thin-lens focal length, image distance, magnification and lens power using signed distances.

Calculate spherical mirror focal length, image distance, radius of curvature and magnification.

Calculate refractive index, speed of light in a medium, or critical angle from refractive indices.

Calculate refracted angle, critical angle and total internal reflection using Snell's Law.

Calculate voltage, current, resistance and power from Ohm's Law circuit values.

Calculate electric power from voltage, current or resistance relationships.

Calculate electrostatic force between two point charges using Coulomb's Law.

Calculate capacitance, capacitor charge or stored energy from charge and voltage values.

Calculate magnetic force on a moving charge or current-carrying wire.

Calculate photon energy from frequency or wavelength using Planck's relation.

Calculate remaining amount from initial amount, half-life and elapsed time.

Calculate remaining amount after a number of half-lives or elapsed time.

Calculate ideal escape velocity from central mass and radius.

Calculate ideal circular orbital velocity from central mass and orbital radius.

Calculate blackbody radiant exitance, radiated power and peak wavelength.

Calculate moles from mass, particles, molarity and volume with formula-assisted molar mass lookup.

Calculate molar mass from a chemical formula with element counts and atomic-weight contributions.

Calculate molecular weight or relative formula mass from a chemical formula.

Calculate molarity, moles or solution volume from moles and litres of solution.

Calculate molality or moles from solute amount and kilograms of solvent.

Calculate normality from equivalents, volume, molarity and equivalent factor.

Calculate final concentration or stock volume with the C1V1 = C2V2 dilution equation.

Calculate pH from hydrogen ion concentration or hydrogen ion concentration from pH.

Calculate pOH from hydroxide ion concentration and estimate related pH at 25 C.

Estimate buffer pH from pKa, conjugate base concentration and weak acid concentration.

Calculate analyte concentration from titrant concentration, volumes and mole ratio.

Calculate target moles from known moles using balanced chemical equation coefficients.

Find the limiting reactant, excess remaining and product formed from balanced reaction amounts.

Calculate percent yield from actual yield and theoretical yield with unit-aware mass inputs.

Find an empirical formula from percent or mass composition using atomic weights and mole ratios.

Find a molecular formula from empirical formula and molecular molar mass.

Balance chemical equations with smallest whole-number coefficients and atom-count checks.

Solve pressure, volume, moles or temperature with PV = nRT and common gas units.

Estimate gas density from pressure, molar mass and temperature using the ideal gas relationship.

Calculate gas mixture partial pressures from total pressure and mole fractions.

Estimate dissolved gas concentration from Henry's Law constant and gas pressure.

Estimate solution vapor pressure from solvent mole fraction and pure-solvent vapor pressure.

Estimate boiling point elevation from molality, Kb and van't Hoff factor.

Estimate freezing point depression from molality, Kf and van't Hoff factor.

Calculate average reaction rate or rate-law rate from concentration, time, rate constant and order.

Calculate reaction half-life for zero-, first-, or second-order chemistry kinetics models.

Calculate Kc from a balanced reaction and equilibrium concentrations.

Calculate Ksp from ion concentrations or molar solubility and dissolution stoichiometry.

Calculate nonstandard electrochemical cell potential from E0, n, Q and temperature.

Identify oxidation and reduction roles from oxidation-number changes.

Estimate population size with exponential or logistic growth models.

Calculate doubling time from continuous or discrete growth rate.

Calculate p², 2pq and q² genotype frequencies from allele frequencies or q².

Calculate allele frequencies p and q from genotype counts or allele counts.

Estimate single-strand DNA molecular weight from A, T, G and C sequence counts.

Calculate GC percentage and AT percentage from DNA sequence or base counts.

Estimate DNA melting temperature from sequence and salt assumptions.

Plan basic biology dilution relationships.

Plan multi-step serial dilution factors.

Estimate split ratio and culture reseeding quantities.

Estimate bacterial growth under simplified assumptions.

Support enzyme reaction-rate workflows.

Estimate Michaelis-Menten velocity relationships.

Estimate osmolarity from solute particles.

Calculate cell concentration from chamber counts.

Support ELISA concentration interpolation workflows.

Plan PCR reagent master mix volumes.

Estimate qPCR amplification efficiency.

Estimate protein concentration from assay values.

Estimate photosynthesis rate from simplified measurements.

Estimate respiration rate from simplified measurements.

Calculate biodiversity index relationships.

Estimate concrete volume for slabs, posts, and simple pours.

Estimate paint coverage from room dimensions and coats.

Format and validate JSON for easier reading and debugging.

Encode and decode Base64 text for development tasks.