---
title: "Watts to Horsepowers — W to hp converter"
description: "1 watt = 0.001341 horsepowers. Convert watts to horsepowers with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/watts-to-hp/
site: "At One Place"
---

# Watts to horsepowers

**1 watt in horsepowers: 1 W = 0.001341 hp**

hp = W × 0.00134102209

To convert watts to horsepowers, multiply by 0.00134102209. The table below gives the values people look up most often, and the converter works for any number.

## Watts to horsepowers table

*Common watt values converted to horsepowers.*

| Watts | Horsepowers |
| --- | --- |
| 1 W | 0.001341 |
| 2 W | 0.002682 |
| 3 W | 0.0040231 |
| 4 W | 0.0053641 |
| 5 W | 0.0067051 |
| 10 W | 0.01341 |
| 15 W | 0.020115 |
| 20 W | 0.02682 |
| 25 W | 0.033526 |
| 30 W | 0.040231 |
| 40 W | 0.053641 |
| 50 W | 0.067051 |
| 75 W | 0.10058 |
| 100 W | 0.1341 |
| 250 W | 0.33526 |
| 500 W | 0.67051 |
| 1,000 W | 1.341022 |

## How the conversion works

The relationship is hp = W × 0.00134102209. Both units measure power, so the conversion is a fixed factor that never changes.

> Horsepower: Mechanical horsepower.

## Common questions

### How many horsepowers are in one watt?

One watt equals 0.001341 horsepowers. hp = W × 0.00134102209.

### How do you convert watts to horsepowers?

Use hp = W × 0.00134102209. So 10 W is 0.01341 hp.

### How many watts are in one horsepower?

One horsepower equals 745.6999 watts, which is the reverse of the conversion above.

### Is there more than one kind of horsepower?

Mechanical horsepower.

## Related pages

- [Horsepowers to Watts](https://atoneplace.net/convert/hp-to-watts/)
- [Watts to Kilowatts](https://atoneplace.net/convert/watts-to-kilowatts/)
- [Watts to Megawatts](https://atoneplace.net/convert/watts-to-megawatts/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)