Power Conversion Chart
Quick-reference power conversion chart. The tables below compare the most common units side by side. Download the free PDF for offline and printable use.
What is horsepower and kilowatts?
Horsepower and kilowatts both measure power, the rate of doing work. Mechanical (imperial) horsepower is 745.69987 watts; a kilowatt is 1,000 watts.
FormulakW = hp × 0.74569987
Key conversions
- 1 hp = 0.74569987 kW (mechanical horsepower)
- 1 kW = 1.341022 hp
- Metric horsepower (PS) is 735.49875 W, slightly smaller than mechanical hp
- Use watts or kilowatts in SI calculations; hp remains common on nameplates
Standards, method, and review
Values are calculated from the shared conversion-factor library. Exact defined relationships are preserved; displayed results are rounded only for readability.
Reviewed by All Unit Conversions Editorial Team. Updated .
Power Conversion Table
| Unit | per 1 W | per 1 kW | per 1 hp | per 1 RT |
|---|---|---|---|---|
| Watt (W) | 1 W | 1000 W | 745.7 W | 3516.85 W |
| Kilowatt (kW) | 0.001 kW | 1 kW | 0.7457 kW | 3.51685 kW |
| Megawatt (MW) | 1.0000e-6 MW | 0.001 MW | 0.0007457 MW | 0.00351685 MW |
| Gigawatt (GW) | 1.0000e-9 GW | 1.0000e-6 GW | 7.4570e-7 GW | 3.5169e-6 GW |
| Horsepower (hp) | 0.00134102 hp | 1.34102 hp | 1 hp | 4.71618 hp |
| Horsepower (Metric) (hp(M)) | 0.00135962 hp(M) | 1.35962 hp(M) | 1.01387 hp(M) | 4.78159 hp(M) |
| BTU per Hour (BTU/h) | 3.41214 BTU/h | 3412.14 BTU/h | 2544.43 BTU/h | 12000 BTU/h |
| Ton of Refrigeration (RT) | 0.000284345 RT | 0.284345 RT | 0.212036 RT | 1 RT |
Values are calculated from the shared conversion-factor library. Exact defined relationships are preserved; displayed results are rounded only for readability.
Related Converters & Charts
Power Conversion Chart FAQs
Common questions about the power conversion chart.
What does this power conversion chart include?
It lists the most common power units side by side with their conversion factors, plus a free printable PDF you can download for offline reference.
Can I download this chart as a PDF, CSV, or JSON?
Yes. Use the "Download Conversion Chart (PDF)" button for a printable version, or grab the machine-readable CSV/JSON conversion-factor dataset linked on this page.