Watts to Horsepower (W → hp)
Formula
1 W = 0.001341021858656296 hpConversion Table
| W | hp |
|---|---|
| 0 | 0 |
| 1.0000 | 0.0013410 |
| 2.0000 | 0.0026820 |
| 3.0000 | 0.0040231 |
| 4.0000 | 0.0053641 |
| 5.0000 | 0.0067051 |
| 6.0000 | 0.0080461 |
| 7.0000 | 0.0093872 |
| 8.0000 | 0.010728 |
| 9.0000 | 0.012069 |
| 10.000 | 0.013410 |
| 11.000 | 0.014751 |
| 12.000 | 0.016092 |
| 13.000 | 0.017433 |
| 14.000 | 0.018774 |
| 15.000 | 0.020115 |
| 16.000 | 0.021456 |
| 17.000 | 0.022797 |
| 18.000 | 0.024138 |
| 19.000 | 0.025479 |
| W | hp |
|---|---|
| 20.000 | 0.026820 |
| 21.000 | 0.028161 |
| 22.000 | 0.029502 |
| 23.000 | 0.030844 |
| 24.000 | 0.032185 |
| 25.000 | 0.033526 |
| 26.000 | 0.034867 |
| 27.000 | 0.036208 |
| 28.000 | 0.037549 |
| 29.000 | 0.038890 |
| 30.000 | 0.040231 |
| 31.000 | 0.041572 |
| 32.000 | 0.042913 |
| 33.000 | 0.044254 |
| 34.000 | 0.045595 |
| 35.000 | 0.046936 |
| 36.000 | 0.048277 |
| 37.000 | 0.049618 |
| 38.000 | 0.050959 |
| 39.000 | 0.052300 |
| W | hp |
|---|---|
| 40.000 | 0.053641 |
| 41.000 | 0.054982 |
| 42.000 | 0.056323 |
| 43.000 | 0.057664 |
| 44.000 | 0.059005 |
| 45.000 | 0.060346 |
| 46.000 | 0.061687 |
| 47.000 | 0.063028 |
| 48.000 | 0.064369 |
| 49.000 | 0.065710 |
| 50.000 | 0.067051 |
| 51.000 | 0.068392 |
| 52.000 | 0.069733 |
| 53.000 | 0.071074 |
| 54.000 | 0.072415 |
| 55.000 | 0.073756 |
| 56.000 | 0.075097 |
| 57.000 | 0.076438 |
| 58.000 | 0.077779 |
| 59.000 | 0.079120 |
| W | hp |
|---|---|
| 60.000 | 0.080461 |
| 61.000 | 0.081802 |
| 62.000 | 0.083143 |
| 63.000 | 0.084484 |
| 64.000 | 0.085825 |
| 65.000 | 0.087166 |
| 66.000 | 0.088507 |
| 67.000 | 0.089848 |
| 68.000 | 0.091189 |
| 69.000 | 0.092531 |
| 70.000 | 0.093872 |
| 71.000 | 0.095213 |
| 72.000 | 0.096554 |
| 73.000 | 0.097895 |
| 74.000 | 0.099236 |
| 75.000 | 0.10058 |
| 76.000 | 0.10192 |
| 77.000 | 0.10326 |
| 78.000 | 0.10460 |
| 79.000 | 0.10594 |
Watts to Horsepower Conversion
Converting Watts (W) to Horsepower (hp) is a common energy and power conversion. 1 W equals 0.001341 hp. For example, 100 W is equal to 0.134102 hp.
Quick Mental Math: Watts to Horsepower
For energy conversions, identify the unit scale difference in the prefix or definition.
Why is converting Watts to Horsepower tricky?
Energy unit conversions involve non-linear factors across different measurement systems.
Quick Reference Values
1 W = 0.001341 hp. 5 W = 0.006705 hp. 10 W = 0.01341 hp. 25 W = 0.033526 hp. 50 W = 0.067051 hp. 100 W = 0.134102 hp.
What is Watts?
Watts (W) is a unit of energy and power. The watt (W) is the SI unit of power, defined as one joule per second (1 W = 1 J/s). It measures the rate of energy transfer or conversion. The watt is named after James Watt and standardized by the BIPM according to the International System of Units [bipm-si-brochure]. Named after engineer James Watt in the late 19th century, the watt was adopted officially by the CIPM and BIPM to quantify mechanical and electrical power consistently. It became part of the SI base units in 1960 [bipm-si-brochure]. Watts measure power output and consumption in electrical, mechanical, and thermal systems globally. It is used across industries, including electronics, automotive, and power generation, following ISO and NIST standards [nist-sp-811].
What is Horsepower?
Horsepower (hp) is a unit of energy and power. Horsepower is a unit of power originally defined to compare the output of steam engines with draft horses. The mechanical horsepower equals exactly 745.7 watts, as standardized by the SAE and ISO. It measures the rate of work or energy transfer in engines and motors [nist-cuu]. James Watt introduced the horsepower unit in the late 18th century to market his improved steam engines by equating their power to that of horses. This practical definition facilitated industrial adoption and standardization of power output metrics [nist-cuu]. Horsepower remains common in automotive, marine, and industrial machinery industries, especially in the US and Europe. Although the watt is the SI unit for power, horsepower is often used in marketing and technical specifications [nist-cuu].
Common Misspellings
People often search for this conversion using these alternate spellings: watt, wat, wats, wattss, horse power, horsepower, hp, horsepwer, horspower. All of these refer to the Watts to Horsepower conversion.