Watt → Milliwatt (W → mW)

1 W = 1000 mW
1 Watt (W) = 1000 Milliwatt (mW).

Watt (W):


Milliwatt (mW):

If you want to reverse convert, use Milliwatt → Watt. 1 mW = 0.001 W. You can also explore the full Power converter page for more cross conversions.

Conversion formula

Watt to Milliwatt formula: value in mW = value in W × 1000.

Milliwatt to Watt formula: value in W = value in mW × 0.001.

How to convert Watt to Milliwatt

To convert Watt to Milliwatt, multiply the value in W by 1000. This gives the result in mW.

For example, 1 W = 1000 mW and 10 W = 10000 mW.

What is Watt?

Watt (W): Describes energy transferred each second, such as an appliance’s power draw. 1 W = 1 J/s.

What is Milliwatt?

Milliwatt (mW): Useful for small electronic loads and optical power. 1 mW = 0.001 W.

FAQ

Watt → other Power units

• 1 watt → kilowatt = 0.001 kilowatt
• 1 watt = 1.0E-6 megawatt
• 1 watt → milliwatt = 1000 milliwatt
• 1 watt → horsepower = 0.001341022089595 horsepower
• 1 watt → btu per hour = 3.4121416331279 btu per hour

Watt → Milliwatt Table

The table below shows common values from Watt to Milliwatt and the reverse direction for quick reference.

Milliwatt → Watt Table

Milliwatt → Watt

The reverse value is 1 mW = 0.001 W.