What is the standard SI base or derived unit for power?

In the International System of Units (SI), power is quantified relative to fundamental physical standards defined by BIPM. UnitGlide references these exact metric constants for all calculations.

How many power units can I convert on UnitGlide?

UnitGlide currently supports 76 different power units, including SI metric, British Imperial, US Customary, and scientific standard units.

How do I convert between different power units?

Enter your known value into the 'Convert from' field, choose your starting unit, and select your target unit. UnitGlide computes the answer instantly using 12-digit floating point arithmetic.

Power Converter

Convert power units including watt, exawatt, petawatt, terawatt, gigawatt and many more power units instantly and accurately.

From

10 watts (W) = 0 exawatts (EW)

Decimal places:

Formula:

EW = W × 0

Popular Power Conversions

Quick access to the most commonly used power conversions.

About Power Units

Free online power converter - converts between 76 units of power, including watt [W], exawatt [EW], petawatt [PW], terawatt [TW], etc. Also, explore many other unit converters or learn more about power unit conversions. Different unit systems are used worldwide, including the Metric System (SI) and the Imperial / US Customary System.

Metric System (SI)

The metric system is the most widely adopted international measurement standard. The base unit is the watt.

Imperial System (US)

The imperial system is commonly used in the United States and specialized international industries including aviation and maritime navigation.

Common Power Units

Here are some of the most common power units and their abbreviations.

Unit	Symbol	Type	In Watt
Watt	W	Metric (base)	1 W
Exawatt	EW	Metric	1E+18 W
Petawatt	PW	Metric	1E+15 W
Terawatt	TW	Metric	1E+12 W
Gigawatt	GW	Metric	1000000000 W
Megawatt	MW	Metric	1000000 W
Kilowatt	kW	Metric	1000 W
Hectowatt	hW	Metric	100 W
Dekawatt	daW	Metric	10 W
Deciwatt	dW	Metric	0.1 W