Electric Power Calculator
Compute electric power from any two of voltage, current, or resistance using P = VI, P = I²R, and P = V²/R.
Calculators and explainers tagged under Physics.
Compute electric power from any two of voltage, current, or resistance using P = VI, P = I²R, and P = V²/R.
Solve F = ma for any of force, mass, or acceleration — with unit-aware defaults.
Compute the spring force, potential energy stored, and displacement using Hooke's law.
Compute the linear momentum of a moving object as the product of its mass and velocity.
Compute mechanical or electrical power as the rate at which energy (work) is transferred per unit time.
Compute density (ρ = m/V), or rearrange the formula to solve for mass or volume given the other two.
Work out kinetic energy from mass and velocity, and see the relationship between the two.
Compute the gravitational potential energy of an object from its mass, height above a reference level, and the local gra...
Compute how long an object takes to fall from a given height and the velocity it reaches just before impact, ignoring ai...
Compute the linear thermal expansion of a solid from its original length, temperature change, and the material's linear...
Relate voltage, current, and resistance — solve for whichever variable is missing.
Compute the impulse delivered by a constant force over a time interval, equal to the change in momentum it causes.
Compute the friction force on a horizontal surface from the coefficient of friction and the object's weight.
Compute the heat required to change the temperature of a substance from its mass, specific heat capacity, and temperatur...
Compute the centripetal force required to keep an object moving in a circle of given radius at a given speed.
Compute the escape velocity from a celestial body's surface from its mass and radius.
Estimate the speed of sound in dry air at any temperature using the standard idealized formula.
Compute the rest energy equivalent of a mass using Einstein's mass-energy equivalence E = mc².
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