Power Calculator
Enter work and time to calculate power using P=W/t
📊 Result Chart
About Power Calculator
Power is a physical quantity describing how fast work is done, equal to work divided by time (P=W/t). Higher power means faster work. This tool helps physics students, engineers, and mechanics quickly calculate power, supporting watts, kilowatts, horsepower, and more, suitable for mechanical design and electrical engineering.
How to Use
- Enter the work done (joules J)
- Enter the time taken (seconds s)
- Click calculate to get power in watts (W)
Related Tools
- Work Calculator — Calculate work W=Fd
- Force Calculator — Newton's Second Law F=ma
- Torque Calculator — Rotational torque calculation
What are the units of power?
The SI unit is the watt (W), where 1W=1J/s. Common units include kilowatt (kW)=1000W and horsepower (hp)≈745.7W.
What is the difference between power and work?
Work is the cumulative effect of force in the direction of displacement, measured in joules (J); power is the rate of doing work, measured in watts (W). Power = Work ÷ Time.
Is electrical power the same as mechanical power?
Essentially the same — both are rates of energy conversion. Electrical power commonly uses P=UI (voltage×current), while mechanical power uses P=Fv (force×velocity) or P=W/t.