Watts to Milliwatts
Convert Watts to Milliwatts instantly. Free online power unit converter with exact formula, conversion table and FAQ.
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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 the SI unit of power, equal to one joule per second.
What is the destination unit in this conversion?
The destination unit is the milliwatt (mW). A milliwatt is 0.001 watt units.
How do I convert watts to milliwatts?
Multiply the watt value by 1000 to get milliwatt. For example, 1 W × 1000 = 1000 mW.
Is the watts to milliwatts conversion exact?
Yes. Both units are defined by fixed numeric relationships to the watt, so the conversion factor used here, 1000, is exact.
Where is this conversion commonly used?
It is used when comparing power ratings expressed in watts against equipment, engines, or specifications rated in milliwatts.
Can I convert milliwatts back to watts?
Yes. Multiply the milliwatt value by 0.001 to get watt.
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About this conversion
This page converts watts (W) into milliwatts (mW), two units used to describe power, the rate at which energy is transferred or work is done.
The watt is the SI unit of power, equal to one joule per second.
A milliwatt is 0.001 watt units.
The formula is mW = W × 1000, derived from each unit's fixed relationship to the watt, the SI unit of power.
Because both units are defined by exact numeric relationships to the watt, this conversion is exact rather than approximate.