1 watt: how many kilowatts, megawatts?

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In this day and time, with technology dominating almost every aspect of our lives, the watt [W] became an important unit not only for physicists. Watts are used in our everyday life: from bills to energy consumption labels on electronic devices.

Watts are often used interchangeably with kilowatts and megawatts. That is why converting units of power may come in handy.

The watt is a SI (metric) unit of of power, equal to 1 joule [J] per second [s]: W= J/s.

Its value can be modified with metric prefixes, which indicate a multitude or a fraction of a given unit. For example, kilo- means ‘times 1000’ and so a kilogramme = 1000 grammes. The same is true for watts: a kilowatt = 1000 watts. For other metric prefixes, take a look at the table below:

MULTIPLES
SUBMULTIPLES
Value
Name
Value
Name
10W
deciwatt
10-1 W
decawatt
10W
centiwatt
10-2 W
hectowatt
10W
milliwatt
10-3 W
kilowatt
10W
microwatt
10-6 W
megawatt
10W
nanowatt
10-9 W
gigawatt
1012 W
picowatt
10-12 W
terawatt
1015 W
femtowatt
10-15 W
petawatt
1018 W
attowatt
10-18 W
exawatt
1021  W
zeptowatt
10-21  W
zettawatt
1024 W
yocowatt
10-24 W
yottawatt


Did you know?

The watt was named in honour of the 18th century Scottish scientist, James Watt, who is known for having patented a steam engine.

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