Convert Milliwatts to Metric Horsepower
1 milliwatt (mW) equals 0.000001359621617 metric horsepower (PS).
1 mW = 0.000001359621617 PS
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk milliwatt to metric horsepower converter to paste a column from Excel.
How to Convert Milliwatt to Metric Horsepower
- 1 mW = 0.000001359621617 PS
- 1 PS = 735498.75 mW
- Example: convert 15 mW to PS: 15 mW = 15 × 0.000001359621617 PS = 0.00002039432426 PS
Formula
PS = mW × 0.000001359621617304
or PS = mW ÷ 735498.75
Derivation from SI units:
- 1 mW = 10⁻³ W
- 1 PS = 75 kgf·m/s = 735.49875 W (exact)
- 1 mW = 0.001 W ÷ 735.49875 W per PS = 0.000001359621617304 PS
Both units are defined exactly, so the factor is exact. Milliwatt definition: milliwatt; Metric Horsepower definition: metric horsepower.
Worked examples
- A reading of 10 mW converts to 0.00001359621617 PS.
10 mW × 0.000001359621617 = 0.00001359621617 PS - A value of 200 mW is 0.0002719243235 PS.
200 mW × 0.000001359621617 = 0.0002719243235 PS
Milliwatt to Metric Horsepower conversion table
| Milliwatts (mW) | Metric Horsepower (PS) |
|---|---|
| 0.1 mW | 1.359621617 × 10⁻⁷ PS |
| 1 mW | 0.000001359621617 PS |
| 5 mW | 0.000006798108087 PS |
| 10 mW | 0.00001359621617 PS |
| 50 mW | 0.00006798108087 PS |
| 100 mW | 0.0001359621617 PS |
| 200 mW | 0.0002719243235 PS |
| 500 mW | 0.0006798108087 PS |
| 1000 mW | 0.001359621617 PS |
Where it's used
Milliwatts are used for laser pointer and diode output, while metric horsepower appear in european and Japanese car specifications (PS, CV). Both measure power (energy per unit time), so the conversion is a fixed factor.
Milliwatt to other power units
| Conversion | 1 mW equals |
|---|---|
| milliwatt to watt | 0.001 W |
| milliwatt to kilowatt | 0.000001 kW |
| milliwatt to megawatt | 1 × 10⁻⁹ MW |
| milliwatt to horsepower | 0.00000134102209 hp |
| milliwatt to metric horsepower | 0.000001359621617 PS |
| milliwatt to BTU per hour | 0.003412141633 BTU/h |
| milliwatt to refrigeration ton | 2.843451361 × 10⁻⁷ TR |
| milliwatt to kilocalorie per hour | 0.0008598452279 kcal/h |
| milliwatt to foot-pound per second | 0.0007375621493 ft·lbf/s |
Frequently asked questions
How many metric horsepower are in 1 milliwatt?
1 mW = 0.000001359621617 PS.
How do I convert milliwatts to metric horsepower?
Multiply the value in mW by 0.000001359621617, or divide it by 735498.75. For example, 15 mW × 0.000001359621617 = 0.00002039432426 PS.
Is the mW to PS conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- 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)".
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 Milliwatts to Metric Horsepower. Retrieved October 17, 2026, from https://scientificconverters.com/power/milliwatts-to-metric-horsepower/
IEEE
Scientific Converters, "Convert Milliwatts to Metric Horsepower," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/milliwatts-to-metric-horsepower/