Physics

Physics calculators for motion, energy, force, pressure, waves, heat and electricity, each showing the equation it uses and the assumptions behind it.

Kinetic Energy Calculator Calculate the kinetic energy of a moving object from its mass and speed, with… Potential Energy Calculator Calculate gravitational potential energy from mass, height and local gravity,… Free Fall Calculator Work out how fast something is travelling after falling a given height, and h… Projectile Motion Calculator Calculate the range, flight time and peak height of a projectile from its lau… Momentum Calculator Calculate linear momentum and the force needed to stop it in a given time. Acceleration Calculator Calculate average acceleration from a change in velocity over time, expressed… Force Calculator Calculate force from mass and acceleration, converted to newtons, kilogram-fo… Centripetal Force Calculator Calculate the inward force needed to keep an object moving in a circle, and t… Gravitational Force Calculator Calculate the gravitational attraction between two masses using Newton's law … Escape Velocity Calculator Calculate the speed needed to escape a body's gravity entirely, with the circ… Terminal Velocity Calculator Calculate the speed at which drag balances weight, so a falling object stops … Pendulum Period Calculator Calculate the period and frequency of a simple pendulum from its length. Wavelength Calculator Convert between wave speed, frequency and wavelength for light, sound or any … Ohm's Law Power Calculator Calculate electrical power from voltage and current, with resistance and hour… Specific Heat Calculator Calculate the energy needed to change a material's temperature, with the time… Density Altitude Calculator Calculate density altitude from elevation, temperature and altimeter setting … Work Calculator Calculate mechanical work from force, distance and the angle between them. Power Calculator Calculate power as the rate of doing work, in watts, kilowatts and horsepower. Efficiency Calculator Calculate the efficiency of any machine or process as useful output over tota… Angular Velocity Calculator Convert rotational speed into angular velocity, tangential speed and centripe… Torque Calculator Calculate torque from force, lever arm length and the angle between them. Density Calculator (Mass and Volume) Calculate density from mass and volume, with the buoyancy check that follows … Pressure Calculator Calculate pressure from force and area, converted to pascals, bar, psi and at… Hydrostatic Pressure Calculator Calculate the pressure a column of fluid exerts at a given depth. Buoyant Force Calculator Calculate the upward force a fluid exerts on a submerged or floating object. Wave Frequency Calculator Calculate wave frequency from speed and wavelength, for sound, light or any o… Sound Intensity Level Calculator Convert sound intensity into decibels, with the perceived loudness change it … Coulomb's Law Calculator Calculate the electrostatic force between two point charges. Capacitor Energy Calculator Calculate the energy and charge stored in a capacitor at a given voltage. Resistivity Calculator Calculate the resistance of a conductor from its resistivity, length and cros… Transformer Turns Ratio Calculator Calculate transformer turns ratio, secondary turns and the current transforma… Heat Transfer Rate Calculator Calculate conductive heat loss through a wall or insulation layer, with the R… Wire Gauge Calculator Size a copper conductor so the voltage drop stays within your limit over the … Hydroelectric Power Calculator Calculate hydroelectric output from flow rate, head and turbine efficiency.

About the physics

Physics calculators for motion, energy, force, pressure, waves, heat and electricity, each showing the equation it uses and the assumptions behind it. There are 34 calculators in this category, and each one shows the formula it uses, works instantly as you type, and keeps your figures on your own device.

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