A Petawatt (PW) equals 1e+15 watt(s), a scaled unit of electrical power used for peta-scale electrical work.
Petawatts to Milliwatts
Convert Petawatt (PW) to Milliwatt (mW) instantly with an exact formula, conversion table, and FAQ.
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Convert petawatts (PW) 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 = PW × 1.000000e+18
Results update instantly for Petawatts to Milliwatts conversions.
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Formula
mW = PW × 1.000000e+18
PW = mW × 1.000000e-18
Conversion table
| 1 PW | 1.000000e+18 mW |
| 5 PW | 5.000000e+18 mW |
| 10 PW | 1.000000e+19 mW |
| 20 PW | 2.000000e+19 mW |
| 50 PW | 5.000000e+19 mW |
| 100 PW | 1.000000e+20 mW |
| 500 PW | 5.000000e+20 mW |
| 1000 PW | 1.000000e+21 mW |
Related conversions
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How the formula works
Both petawatt and milliwatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in petawatts by 1.000000e+18 to get milliwatts. To reverse the conversion, multiply a milliwatt value by 1.000000e-18 to get back to petawatts.
Frequently asked questions
What is Petawatt (PW)?
A Petawatt (PW) equals 1e+15 watt(s), a scaled unit of electrical power used for peta-scale electrical work.
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 petawatts to milliwatts?
Multiply the petawatt value by 1.000000e+18 to get the equivalent in milliwatts. For example, 5 PW × 1.000000e+18 = 5.000000e+18 mW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1.000000e+18 is an exact, non-rounded value.
Can I convert milliwatts back to petawatts?
Yes. Divide the milliwatt value by 1.000000e+18, or multiply it by 1.000000e-18, to get petawatts.
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About converting petawatts to milliwatts
A Petawatt (PW) equals 1e+15 watt(s), a scaled unit of electrical power used for peta-scale electrical work. 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 petawatts 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.