A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work.
Milliwatts to Kilowatts
Convert Milliwatt (mW) to Kilowatt (kW) instantly with an exact formula, conversion table, and FAQ.
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Convert milliwatts (mW) to kilowatts (kW) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A Kilowatt (kW) equals 1,000 watt(s), a scaled unit of electrical power used for kilo-scale electrical work.
kW = mW × 0.000001
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Formula
kW = mW × 0.000001
mW = kW × 1.000000e+06
Conversion table
| 1 mW | 0.000001 kW |
| 5 mW | 0.000005 kW |
| 10 mW | 0.00001 kW |
| 20 mW | 0.00002 kW |
| 50 mW | 0.00005 kW |
| 100 mW | 0.0001 kW |
| 500 mW | 0.0005 kW |
| 1000 mW | 0.001 kW |
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How the formula works
Both milliwatt and kilowatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in milliwatts by 0.000001 to get kilowatts. To reverse the conversion, multiply a kilowatt value by 1.000000e+06 to get back to milliwatts.
Frequently asked questions
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.
What is Kilowatt (kW)?
A Kilowatt (kW) equals 1,000 watt(s), a scaled unit of electrical power used for kilo-scale electrical work.
How do I convert milliwatts to kilowatts?
Multiply the milliwatt value by 0.000001 to get the equivalent in kilowatts. For example, 5 mW × 0.000001 = 0.000005 kW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 0.000001 is an exact, non-rounded value.
Can I convert kilowatts back to milliwatts?
Yes. Divide the kilowatt value by 0.000001, or multiply it by 1.000000e+06, to get milliwatts.
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About converting milliwatts to kilowatts
A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work. A Kilowatt (kW) equals 1,000 watt(s), a scaled unit of electrical power used for kilo-scale electrical work.
Use this calculator to move between milliwatts and kilowatts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.