Horsepower to Milliwatts
Convert Horsepower to Milliwatts instantly. Free online power unit converter with exact formula, conversion table and FAQ.
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Formula
mW = hp × 745699.8716
hp = mW × 1.34102209e-6
Conversion table
| 1 hp | 745700 mW |
| 5 hp | 3728499 mW |
| 10 hp | 7456999 mW |
| 20 hp | 14913997 mW |
| 50 hp | 37284994 mW |
| 100 hp | 74569987 mW |
| 500 hp | 372849936 mW |
| 1000 hp | 745699872 mW |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the horsepower (hp). Mechanical (imperial) horsepower is a traditional unit of power used for engines and motors, defined as exactly 745.6998715822702 watts.
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 horsepower to milliwatts?
Multiply the horsepower value by 745699.8716 to get milliwatt. For example, 1 hp × 745699.8716 = 745700 mW.
Is the horsepower to milliwatts conversion exact?
Yes. Both units are defined by fixed numeric relationships to the watt, so the conversion factor used here, 745699.8716, is exact.
Where is this conversion commonly used?
It is used when comparing power ratings expressed in horsepower against equipment, engines, or specifications rated in milliwatts.
Can I convert milliwatts back to horsepower?
Yes. Multiply the milliwatt value by 1.34102209e-6 to get horsepower.
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About this conversion
This page converts horsepower (hp) into milliwatts (mW), two units used to describe power, the rate at which energy is transferred or work is done.
Mechanical (imperial) horsepower is a traditional unit of power used for engines and motors, defined as exactly 745.6998715822702 watts.
A milliwatt is 0.001 watt units.
The formula is mW = hp × 745699.8716, 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.