---
title: "Watts to BTU per hour — W to BTU/h converter"
description: "1 watt = 3.412142 BTU per hour. Convert watts to BTU per hour with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/watts-to-btu-per-hour/
site: "At One Place"
---

# Watts to BTU per hour

**1 watt in BTU per hour: 1 W = 3.412142 BTU/h**

BTU/h = W × 3.412141633

To convert watts to BTU per hour, multiply by 3.412141633. The table below gives the values people look up most often, and the converter works for any number.

## Watts to BTU per hour table

*Common watt values converted to BTU per hour.*

| Watts | BTU per hour |
| --- | --- |
| 1 W | 3.412142 |
| 2 W | 6.824283 |
| 3 W | 10.23642 |
| 4 W | 13.64857 |
| 5 W | 17.06071 |
| 10 W | 34.12142 |
| 15 W | 51.18212 |
| 20 W | 68.24283 |
| 25 W | 85.30354 |
| 30 W | 102.3642 |
| 40 W | 136.4857 |
| 50 W | 170.6071 |
| 75 W | 255.9106 |
| 100 W | 341.2142 |
| 250 W | 853.0354 |
| 500 W | 1,706.0708 |
| 1,000 W | 3,412.1416 |

## How the conversion works

The relationship is BTU/h = W × 3.412141633. Both units measure power, so the conversion is a fixed factor that never changes.

## Common questions

### How many BTU per hour are in one watt?

One watt equals 3.412142 BTU per hour. BTU/h = W × 3.412141633.

### How do you convert watts to BTU per hour?

Use BTU/h = W × 3.412141633. So 10 W is 34.12142 BTU/h.

### How many watts are in one BTU per hour?

One BTU per hour equals 0.29307 watts, which is the reverse of the conversion above.

## Related pages

- [BTU per hour to Watts](https://atoneplace.net/convert/btu-per-hour-to-watts/)
- [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/)

## 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/)