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Milliwatt [mW] to Watt [W] Converter

Quick Reference

1 Milliwatt (mW) = 0.001 Watt (W)

1 Watt (W) = 1000 Milliwatt (mW)

How to Convert Milliwatt to Watt

1 mW = 0.001 W
1 W = 1000 mW

To convert Milliwatt to Watt, divide the value by 1000 (equivalently, multiply by 0.001). To convert Watt back to Milliwatt, multiply by 1000.

Example: convert 10 mW to W:
10 mW = 10 x 0.001 = 0.01 W

↔ Convert Watt to Milliwatt

Milliwatt

Definition: A milliwatt (mW) is a unit of power equal to one thousandth (10⁻³) of a watt. It is a subunit of the base unit, the watt, in the International System of Units (SI).

History/origin: The watt is named in honor of Scottish inventor James Watt. The milliwatt, as a decimal multiple of the watt, was naturally derived as a smaller, more convenient unit for measuring smaller powers.

Current use: Milliwatts are used to measure small power levels in electronic circuits, audio equipment, and wireless communication devices. It's used where power consumption is low.

Watt

Definition: The watt (W) is the derived unit of power in the International System of Units (SI). It is defined as one joule per second and represents the rate at which energy is transferred or converted.

History/origin: The watt is named in honor of Scottish inventor James Watt, who significantly improved the steam engine. The unit was adopted by the Second Congress of the British Association for the Advancement of Science in 1882.

Current use: Watts are used universally to measure power consumption and generation in electrical and mechanical systems. It is a fundamental unit for specifying the power rating of appliances, light bulbs, and engines.

Milliwatt to Watt Conversion Table

Milliwatt [mW]Watt [W]
1 mW0.001 W
2 mW0.002 W
5 mW0.005 W
10 mW0.01 W
20 mW0.02 W
50 mW0.05 W
100 mW0.1 W
200 mW0.2 W
500 mW0.5 W
1000 mW1 W

Common Milliwatt to Watt conversions

  • 1 mW = 0.001 W
  • 2 mW = 0.002 W
  • 3 mW = 0.003 W
  • 4 mW = 0.004 W
  • 5 mW = 0.005 W
  • 6 mW = 0.006 W
  • 7 mW = 0.007 W
  • 8 mW = 0.008 W
  • 9 mW = 0.009 W
  • 10 mW = 0.01 W
  • 12 mW = 0.012 W
  • 15 mW = 0.015 W
  • 20 mW = 0.02 W
  • 25 mW = 0.025 W
  • 30 mW = 0.03 W
  • 40 mW = 0.04 W
  • 50 mW = 0.05 W
  • 60 mW = 0.06 W
  • 75 mW = 0.075 W
  • 100 mW = 0.1 W
  • 150 mW = 0.15 W
  • 200 mW = 0.2 W
  • 250 mW = 0.25 W
  • 300 mW = 0.3 W
  • 500 mW = 0.5 W
  • 750 mW = 0.75 W
  • 1,000 mW = 1 W

Milliwatt [mW] to Watt [W] Converter

What is 1 mW in W?
1 Milliwatt (mW) equals 0.001 W, and 1 W equals 1,000 mW.
How do I convert Milliwatt to Watt?
Divide by 1,000: 10 mW ÷ 1,000 = 0.01 W. The converter above does it for any value, with the precision you choose.
What is 100 mW in W?
100 mW = 0.1 W. Common amounts are listed on this page, each with its own step-by-step page.
Is a Milliwatt bigger than a Watt?
No. 1 mW is only 0.001 W: it takes 1,000 mW to make 1 W.
Milliwatt to Watt Converter | UtilLab