Petawatts to Milliwatts
Convert Petawatts to Milliwatts instantly. Free online power unit converter with exact formula, conversion table and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Use the converter to see the formula.
Results update instantly for Petawatts to Milliwatts conversions.
Reserved above the conversion cards and below the converter.
Formula
mW = PW × 1e+18
PW = mW × 1e-18
Conversion table
| 1 PW | 1e+18 mW |
| 5 PW | 5e+18 mW |
| 10 PW | 1e+19 mW |
| 20 PW | 2e+19 mW |
| 50 PW | 5e+19 mW |
| 100 PW | 1e+20 mW |
| 500 PW | 5e+20 mW |
| 1000 PW | 1e+21 mW |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is the petawatt (PW). A petawatt is 1e+15 watt units.
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 petawatts to milliwatts?
Multiply the petawatt value by 1e+18 to get milliwatt. For example, 1 PW × 1e+18 = 1e+18 mW.
Is the petawatts to milliwatts conversion exact?
Yes. Both units are defined by fixed numeric relationships to the watt, so the conversion factor used here, 1e+18, is exact.
Where is this conversion commonly used?
It is used when comparing power ratings expressed in petawatts against equipment, engines, or specifications rated in milliwatts.
Can I convert milliwatts back to petawatts?
Yes. Multiply the milliwatt value by 1e-18 to get petawatt.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts petawatts (PW) into milliwatts (mW), two units used to describe power, the rate at which energy is transferred or work is done.
A petawatt is 1e+15 watt units.
A milliwatt is 0.001 watt units.
The formula is mW = PW × 1e+18, 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.