Watt to Milliwatt
Convert Watt to Milliwatt instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
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Convert common stress, force, torque, power, and energy units used in engineering.
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Formula
mW = W × 1000
W = mW × 0.001
Conversion table
| 1 W | 1000 mW |
| 5 W | 5000 mW |
| 10 W | 10000 mW |
| 20 W | 20000 mW |
| 50 W | 50000 mW |
| 100 W | 100000 mW |
| 500 W | 500000 mW |
| 1000 W | 1000000 mW |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the Watt (W). The watt is one joule per second.
What is the destination unit in this conversion?
The destination unit is the Milliwatt (mW). Milliwatt is 0.001 watt units.
How do I convert Watt to Milliwatt?
Multiply the Watt value by 1000. For example, 10 W × 1000 = 10000 mW.
Is the Watt to Milliwatt conversion exact?
Yes. Both units belong to the same engineering measurement family (power), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in Watt needs to be compared with, or reported in, Milliwatt, such as in engineering, scientific, or industrial calculations.
Can I convert Milliwatt back to Watt?
Yes. Multiply the Milliwatt value by 0.001 to get Watt.
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About this conversion
This page converts Watt (W) to Milliwatt (mW) within the engineering converter.
The watt is one joule per second. Milliwatt is 0.001 watt units.
The formula is mW = W × 1000, based on each unit's fixed relationship to the power base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common Watt values already converted to Milliwatt.