Physics Calculators

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.