42 calculators
Physics calculators
Mechanics, waves, thermodynamics, optics and relativity, with SI defining constants used at their exact values.
A
- Acceleration Acceleration from a change of velocity over time, with the distance covered and the g-force.
- Aerodynamic drag Drag force and the power needed to overcome it at a given speed.
- Air density Density of moist air from pressure, temperature and humidity, with the density altitude.
- Angular velocity Convert between RPM, radians per second and surface speed, with the centripetal acceleration.
B
C
- Carnot efficiency The thermodynamic ceiling on any heat engine, and the matching heat pump coefficient of performance.
- Centripetal force Force, acceleration and g-loading for circular motion, with the banking angle for a curve.
- Coulomb's law Force between two point charges, with the field strength and potential.
D
F
H
I
K
P
- Pendulum Period and frequency of a simple pendulum, with the length needed for a one-second swing.
- Photon energy Energy, frequency and momentum of a photon from its wavelength.
- Potential energy Potential energy from mass, height and gravity, with the speed it converts into.
- Projectile motion Range, maximum height and flight time for a projectile launched at an angle, ignoring drag.
- Pulley system Effort, rope travel and load capacity for a block and tackle.
R
S
- Snell's law Refraction angle between two media, with the critical angle for total internal reflection.
- Sound level Convert between sound pressure, intensity and decibels, and combine two sources.
- Speed of sound Speed of sound in air at a given temperature, with the Mach number for a given speed.
- Speed, distance and time Solve for whichever of speed, distance or time you are missing, in any combination of units.
- Springs Spring force, stored energy and oscillation period from stiffness, displacement and mass.
- Stopping distance Reaction distance, braking distance and total stopping distance from speed and grip.
T
- Terminal velocity Terminal velocity from mass, drag coefficient, frontal area and air density.
- Thermal expansion Change in length, area and volume from a temperature change and a coefficient.
- Thermal radiation Radiated power from a hot surface, with the peak wavelength from Wien displacement law.
- Thin lens Image distance, magnification and image size from object distance and focal length.
- Torque and power Convert between torque, rotational speed and power, in metric and imperial units.
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