Convert Metric Horsepower to Milliwatts
1 metric horsepower (PS) equals 735498.75 milliwatts (mW).
1 PS = 735498.75 mW
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk metric horsepower to milliwatt converter to paste a column from Excel.
How to Convert Metric Horsepower to Milliwatt
- 1 PS = 735498.75 mW
- 1 mW = 0.000001359621617 PS
- Example: convert 15 PS to mW: 15 PS = 15 × 735498.75 mW = 11032481.25 mW
Formula
mW = PS × 735498.75
Derivation from SI units:
- 1 PS = 75 kgf·m/s = 735.49875 W (exact)
- 1 mW = 10⁻³ W
- 1 PS = 735.49875 W ÷ 0.001 W per mW = 735498.75 mW
Both units are defined exactly, so the factor is exact. Metric Horsepower definition: metric horsepower; Milliwatt definition: milliwatt.
Worked examples
- A reading of 100 PS converts to 73549875 mW.
100 PS × 735498.75 = 73549875 mW - A value of 200 PS is 147099750 mW.
200 PS × 735498.75 = 147099750 mW
Metric Horsepower to Milliwatt conversion table
| Metric Horsepower (PS) | Milliwatts (mW) |
|---|---|
| 1 PS | 735498.75 mW |
| 50 PS | 36774937.5 mW |
| 75 PS | 55162406.25 mW |
| 100 PS | 73549875 mW |
| 110 PS | 80904862.5 mW |
| 150 PS | 110324812.5 mW |
| 200 PS | 147099750 mW |
| 250 PS | 183874687.5 mW |
| 300 PS | 220649625 mW |
| 500 PS | 367749375 mW |
Where it's used
Metric Horsepower are used for european and Japanese car specifications (PS, CV), while milliwatts appear in laser pointer and diode output. Both measure power (energy per unit time), so the conversion is a fixed factor.
Metric Horsepower to other power units
| Conversion | 1 PS equals |
|---|---|
| metric horsepower to watt | 735.49875 W |
| metric horsepower to milliwatt | 735498.75 mW |
| metric horsepower to kilowatt | 0.73549875 kW |
| metric horsepower to megawatt | 0.00073549875 MW |
| metric horsepower to horsepower | 0.9863200706 hp |
| metric horsepower to BTU per hour | 2509.625906 BTU/h |
| metric horsepower to refrigeration ton | 0.2091354922 TR |
| metric horsepower to kilocalorie per hour | 632.4150903 kcal/h |
| metric horsepower to foot-pound per second | 542.4760388 ft·lbf/s |
Frequently asked questions
How many milliwatts are in 1 metric horsepower?
1 PS = 735498.75 mW.
How do I convert metric horsepower to milliwatts?
Multiply the value in PS by 735498.75. For example, 15 PS × 735498.75 = 11032481.25 mW.
Is the PS to mW conversion exact?
Yes. Both units are defined exactly, and 1 PS is exactly 735498.75 mW.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "horsepower (metric)".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Metric Horsepower to Milliwatts. Retrieved October 17, 2026, from https://scientificconverters.com/power/metric-horsepower-to-milliwatts/
IEEE
Scientific Converters, "Convert Metric Horsepower to Milliwatts," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/metric-horsepower-to-milliwatts/