The volt (V) is the SI unit of electric potential difference, the "push" that drives current through a circuit.
Volts to Milliwatts
Convert Volt (V) to Milliwatt (mW) instantly with an exact formula, conversion table, and FAQ.
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Convert volts (V) to milliwatts (mW) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work.
mW = V × 1000
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Formula
mW = V × 1000
V = mW × 0.001
Conversion table
| 1 V | 1000 mW |
| 5 V | 5000 mW |
| 10 V | 10000 mW |
| 20 V | 20000 mW |
| 50 V | 50000 mW |
| 100 V | 100000 mW |
| 500 V | 500000 mW |
| 1000 V | 1.000000e+06 mW |
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How the formula works
Both volt and milliwatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in volts by 1000 to get milliwatts. To reverse the conversion, multiply a milliwatt value by 0.001 to get back to volts.
Frequently asked questions
What is Volt (V)?
The volt (V) is the SI unit of electric potential difference, the "push" that drives current through a circuit.
What is Milliwatt (mW)?
A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work.
How do I convert volts to milliwatts?
Multiply the volt value by 1000 to get the equivalent in milliwatts. For example, 5 V × 1000 = 5000 mW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1000 is an exact, non-rounded value.
Can I convert milliwatts back to volts?
Yes. Divide the milliwatt value by 1000, or multiply it by 0.001, to get volts.
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About converting volts to milliwatts
The volt (V) is the SI unit of electric potential difference, the "push" that drives current through a circuit. A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work.
Use this calculator to move between volts and milliwatts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.