On this page
How to Calculate Power
Formula
Power measures the rate at which work is done or energy is transferred. The formula P = W/t gives power in watts when work is in joules and time in seconds. One watt equals one joule per second, and one horsepower is approximately 745.7 watts.
Common use cases:
- Motor and engine ratings
- Electrical power consumption
- Exercise energy expenditure
Frequently Asked Questions
Was this calculator helpful?
People Also Use
Velocity Calculator
Calculate velocity from distance and time or initial velocity plus acceleration instantly.
Acceleration Calculator
Calculate acceleration from initial velocity, final velocity, and time instantly.
Force Calculator
Calculate force using Newton's second law F = ma from mass and acceleration.
Kinetic Energy
Calculate the kinetic energy of a moving object from its mass and velocity.
Potential Energy
Calculate gravitational potential energy from mass, height, and gravity.
Momentum Calculator
Calculate linear momentum from mass and velocity using p = mv.
Free Fall
Calculate free fall distance, time, and impact velocity under gravity.
Friction Calculator
Calculate friction force from the coefficient of friction and normal force.