Power converter

This power converter tool helps you convert between 58 different units:

Value:

From:

To:

Result:

Common power units explained

Learn more about these commonly used power units:

Watts

All possible power conversions

Below, we provide an overview of all the power conversions available on this website to help you navigate and utilize our resources efficiently.

Unit	Conversion
Watts (W)	Base unit
Kilowatts (kW)	Kilowatts to Watts \| Watts to Kilowatts
Horsepower (metric) (PS)	Horsepower (metric) to Watts \| Watts to Horsepower (metric)
Horsepower (electric) (hp)	Horsepower (electric) to Watts \| Watts to Horsepower (electric)
Horsepower (boiler) (hp)	Horsepower (boiler) to Watts \| Watts to Horsepower (boiler)
Horsepower (imperial) (hp)	Horsepower (imperial) to Watts \| Watts to Horsepower (imperial)
Horsepower (water) (hp)	Horsepower (water) to Watts \| Watts to Horsepower (water)
Btus (international table) per hour (Btu/h)	Btus (international table) per hour to Watts \| Watts to Btus (international table) per hour
Btus (international table) per minute (Btu/min)	Btus (international table) per minute to Watts \| Watts to Btus (international table) per minute
Btus (international table) per second (Btu/s)	Btus (international table) per second to Watts \| Watts to Btus (international table) per second
Mbh (MBH)	Mbh to Watts \| Watts to Mbh
Btus (thermochemical) per hour (Btu/h)	Btus (thermochemical) per hour to Watts \| Watts to Btus (thermochemical) per hour
Btus (thermochemical) per minute (Btu/min)	Btus (thermochemical) per minute to Watts \| Watts to Btus (thermochemical) per minute
Btus (thermochemical) per second (Btu/s)	Btus (thermochemical) per second to Watts \| Watts to Btus (thermochemical) per second
Tons-of refrigeration (TR)	Tons-of refrigeration to Watts \| Watts to Tons-of refrigeration
Kilocalories (international table) per hour (kcal/h)	Kilocalories (international table) per hour to Watts \| Watts to Kilocalories (international table) per hour
Kilocalories (international table) per minute (kcal/min)	Kilocalories (international table) per minute to Watts \| Watts to Kilocalories (international table) per minute
Kilocalories (international table) per second (kcal/s)	Kilocalories (international table) per second to Watts \| Watts to Kilocalories (international table) per second
Calories (international table) per hour (cal/h)	Calories (international table) per hour to Watts \| Watts to Calories (international table) per hour
Calories (international table) per minute (cal/min)	Calories (international table) per minute to Watts \| Watts to Calories (international table) per minute
Calories (international table) per second (cal/s)	Calories (international table) per second to Watts \| Watts to Calories (international table) per second
Kilocalories (thermochemical) per hour (kcal/h)	Kilocalories (thermochemical) per hour to Watts \| Watts to Kilocalories (thermochemical) per hour
Kilocalories (thermochemical) per minute (kcal/min)	Kilocalories (thermochemical) per minute to Watts \| Watts to Kilocalories (thermochemical) per minute
Kilocalories (thermochemical) per second (kcal/s)	Kilocalories (thermochemical) per second to Watts \| Watts to Kilocalories (thermochemical) per second
Calories (thermochemical) per hour (cal/h)	Calories (thermochemical) per hour to Watts \| Watts to Calories (thermochemical) per hour
Calories (thermochemical) per minute (cal/min)	Calories (thermochemical) per minute to Watts \| Watts to Calories (thermochemical) per minute
Calories (thermochemical) per second (cal/s)	Calories (thermochemical) per second to Watts \| Watts to Calories (thermochemical) per second
Foot pounds-force per hour (ft·lbf/h)	Foot pounds-force per hour to Watts \| Watts to Foot pounds-force per hour
Foot pounds-force per minute (ft·lbf/min)	Foot pounds-force per minute to Watts \| Watts to Foot pounds-force per minute
Foot pounds-force per second (ft·lbf/s)	Foot pounds-force per second to Watts \| Watts to Foot pounds-force per second
Ergs per second (erg/s)	Ergs per second to Watts \| Watts to Ergs per second
Kilovolt-amperes (kVA)	Kilovolt-amperes to Watts \| Watts to Kilovolt-amperes
Volt-amperes (VA)	Volt-amperes to Watts \| Watts to Volt-amperes
Newton-meters per second (N·m/s)	Newton-meters per second to Watts \| Watts to Newton-meters per second
Joules per second (J/s)	Joules per second to Watts \| Watts to Joules per second
Quettawatts (QW)	Quettawatts to Watts \| Watts to Quettawatts
Ronnawatts (RW)	Ronnawatts to Watts \| Watts to Ronnawatts
Yottawatts (YW)	Yottawatts to Watts \| Watts to Yottawatts
Zettawatts (ZW)	Zettawatts to Watts \| Watts to Zettawatts
Exawatts (EW)	Exawatts to Watts \| Watts to Exawatts
Petawatts (PW)	Petawatts to Watts \| Watts to Petawatts
Terawatts (TW)	Terawatts to Watts \| Watts to Terawatts
Gigawatts (GW)	Gigawatts to Watts \| Watts to Gigawatts
Megawatts (MW)	Megawatts to Watts \| Watts to Megawatts
Hectowatts (hW)	Hectowatts to Watts \| Watts to Hectowatts
Dekawatts (daW)	Dekawatts to Watts \| Watts to Dekawatts
Deciwatts (dW)	Deciwatts to Watts \| Watts to Deciwatts
Centiwatts (cW)	Centiwatts to Watts \| Watts to Centiwatts
Milliwatts (mW)	Milliwatts to Watts \| Watts to Milliwatts
Microwatts (µW)	Microwatts to Watts \| Watts to Microwatts
Nanowatts (nW)	Nanowatts to Watts \| Watts to Nanowatts
Picowatts (pW)	Picowatts to Watts \| Watts to Picowatts
Femtowatts (fW)	Femtowatts to Watts \| Watts to Femtowatts
Attowatts (aW)	Attowatts to Watts \| Watts to Attowatts
Zeptowatts (zW)	Zeptowatts to Watts \| Watts to Zeptowatts
Yoctowatts (yW)	Yoctowatts to Watts \| Watts to Yoctowatts
Rontowatts (rW)	Rontowatts to Watts \| Watts to Rontowatts
Quectowatts (qW)	Quectowatts to Watts \| Watts to Quectowatts

What is Power?

Power is the rate at which energy is transferred or converted per unit of time. In physics, power is commonly measured in watts (W) in the metric system and horsepower (hp) in the imperial system.

How is Power Measured?

Power is calculated using the formula P = E/t, where P is power, E is energy in joules, and t is time in seconds. Another common formula is P = F × v, which relates power to force and velocity.

Applications of Power

Electrical power generation and consumption
Automobile engine performance measurement
Mechanical systems and industrial machinery
Renewable energy calculations (solar, wind, hydro)

Frequently Asked Questions

What is the difference between power and energy?

Energy is the capacity to do work, measured in joules, while power is the rate at which energy is used or transferred, measured in watts.

Why is horsepower still used instead of watts?

Horsepower is a historical unit that remains in use for rating engines and machinery, especially in automotive and industrial applications, due to tradition and industry standards.

How does electrical power differ from mechanical power?

Electrical power is measured as voltage multiplied by current (P = V × I), while mechanical power is typically measured as force multiplied by velocity or torque multiplied by rotational speed.