A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work.
Milliwatts to Gigawatts
Convert Milliwatt (mW) to Gigawatt (GW) instantly with an exact formula, conversion table, and FAQ.
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Convert milliwatts (mW) to gigawatts (GW) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A Gigawatt (GW) equals 1e+9 watt(s), a scaled unit of electrical power used for giga-scale electrical work.
GW = mW × 1.000000e-12
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Formula
GW = mW × 1.000000e-12
mW = GW × 1.000000e+12
Conversion table
| 1 mW | 1.000000e-12 GW |
| 5 mW | 5.000000e-12 GW |
| 10 mW | 1.000000e-11 GW |
| 20 mW | 2.000000e-11 GW |
| 50 mW | 5.000000e-11 GW |
| 100 mW | 1.000000e-10 GW |
| 500 mW | 5.000000e-10 GW |
| 1000 mW | 1.000000e-09 GW |
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How the formula works
Both milliwatt and gigawatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in milliwatts by 1.000000e-12 to get gigawatts. To reverse the conversion, multiply a gigawatt value by 1.000000e+12 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 Gigawatt (GW)?
A Gigawatt (GW) equals 1e+9 watt(s), a scaled unit of electrical power used for giga-scale electrical work.
How do I convert milliwatts to gigawatts?
Multiply the milliwatt value by 1.000000e-12 to get the equivalent in gigawatts. For example, 5 mW × 1.000000e-12 = 5.000000e-12 GW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1.000000e-12 is an exact, non-rounded value.
Can I convert gigawatts back to milliwatts?
Yes. Divide the gigawatt value by 1.000000e-12, or multiply it by 1.000000e+12, to get milliwatts.
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About converting milliwatts to gigawatts
A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work. A Gigawatt (GW) equals 1e+9 watt(s), a scaled unit of electrical power used for giga-scale electrical work.
Use this calculator to move between milliwatts and gigawatts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.