Physics
Motion, energy, momentum, forces, Ohm's law, circuits, gases, waves and buoyancy.
23 tools
- Kinematics (SUVAT) CalculatorSolve constant-acceleration motion: enter any three of displacement, initial velocity, final velocity, acceleration and time to get the other two.
- Free Fall CalculatorFind how long a dropped object takes to fall, how far it falls and how fast it hits — on Earth, the Moon or another planet.
- Projectile Motion CalculatorFind a projectile's range, maximum height and flight time from its launch speed, angle and height.
- Kinetic Energy CalculatorFind the kinetic energy of a moving object, or the mass or speed that gives a certain energy.
- Potential Energy CalculatorFind the gravitational potential energy of an object lifted to a height, or the mass or height for a given energy.
- Hooke's Law CalculatorUse Hooke's law to find a spring's force, spring constant or stretch, plus the elastic energy it stores.
- Momentum CalculatorFind an object's linear momentum from its mass and velocity, or solve for the mass or velocity.
- Impulse CalculatorFind the impulse from a force acting over a time, or from a change in momentum — and the average force or velocity change.
- Work CalculatorFind the work done by a force moving an object over a distance, at any angle to the motion.
- Mechanical Power CalculatorFind mechanical power from work done over time, or from a force moving at a speed — in watts and horsepower.
- E = mc² (Mass–Energy) CalculatorTurn mass into its equivalent energy with E = mc², or find the mass equivalent of an energy.
- Weight on Other Planets CalculatorSee what you would weigh on the Moon, Mars, Jupiter and every other planet, from your weight on Earth.
- Friction CalculatorFind the friction force from the coefficient of friction and the normal force — on level ground, on a slope, or from a known normal force.
- Ohm's Law CalculatorEnter any two of voltage, current, resistance and power to get the other two with Ohm's law.
- Electrical Power CalculatorFind electrical power in watts from voltage, current or resistance — DC, single-phase or three-phase AC — and the energy used over time.
- Resistors in Series & Parallel CalculatorFind the total resistance of resistors wired in series or in parallel.
- Ideal Gas Law CalculatorSolve the ideal gas law PV = nRT for pressure, volume, amount of gas (moles) or temperature.
- Wave Speed, Frequency & Wavelength CalculatorSolve v = fλ for a wave's speed, frequency or wavelength — sound, light, radio or water waves.
- Centripetal Force CalculatorFind the centripetal force and acceleration that keep an object moving in a circle, from its mass, speed (or rpm) and radius.
- Torque CalculatorFind the torque from a force applied at a distance from a pivot (lever arm), at any angle.
- Pressure Calculator (Force ÷ Area)Solve P = F ÷ A for pressure, force or area, in pascals, psi, bar and atmospheres.
- Buoyancy CalculatorUse Archimedes' principle to find the buoyant force on a submerged object — and whether it floats or sinks.
- Density CalculatorSolve ρ = m ÷ V for density, mass or volume, with specific gravity compared to water.