Convert 1 watt (joules/sec) to milliwatt

1 W (watt (joules/sec)) is equal to 1,000 mW (milliwatt). To convert from watt (joules/sec) to milliwatt, multiply by 1,000 or divide by 0.001.

• 1 W × 1000 = 1000 mW
• 1 W ÷ 0.001 = 1000 mW