---
title: "Power converter — every unit"
description: "Convert between every power unit: watt, kilowatt, megawatt, horsepower and more. Tables, exact formulas and a calculator."
url: https://atoneplace.net/convert/power/
site: "At One Place"
---

# Power conversions

Every power unit on the site, and every conversion between them. Each page shows a full table, the exact formula and a live calculator.

## All power units

*Every power unit and its size relative to the base unit.*

| Unit | Symbol | In watt |
| --- | --- | --- |
| watt | W | 1 |
| kilowatt | kW | 1,000 |
| megawatt | MW | 1,000,000 |
| horsepower | hp | 745.6998716 |
| metric horsepower | PS | 735.49875 |
| BTU per hour | BTU/h | 0.2930710702 |

## Common conversions

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