Watt to BTU (IT) per hour Converter
1 watt is about 3.412141633 BTUs per hour. Convert watts (W) to BTUs per hour (BTU/h) below: type a value and the result updates as you type.
W to BTU/h calculator
Result
Watt to BTU (IT) per hour conversion
1 W ≈ 3.412141633 BTU/hone watt in BTUs per hour
1 BTU/h ≈ 0.2930710702 Wone BTU per hour in watts
Watt (W): SI derived unit: one joule per second.
BTU (IT) per hour (BTU/h): One International Table BTU per hour (about 0.29307 watts).
Source:Watt: SI Brochure, 9th edition (BIPM, 2019); BTU (IT) per hour: NIST Special Publication 811 (2008), Appendix B.8
How to convert watts to BTUs per hour
To convert watts to BTUs per hour, multiply the number of watts by about 3.412141633.
Formula
BTU/h = W × 3.412141633
The factor is rounded here. The calculator uses the exact value.
Examples
- 5 W = 5 × 3.412141633 ≈ 17.06070817 BTU/h
- 25 W = 25 × 3.412141633 ≈ 85.30354083 BTU/h
- 100 W = 100 × 3.412141633 ≈ 341.2141633 BTU/h
Watt to BTU (IT) per hour conversion table
| Watt (W) | BTU (IT) per hour (BTU/h) |
|---|---|
| 0.1 W | 0.3412141633 BTU/h |
| 0.5 W | 1.706070817 BTU/h |
| 1 W | 3.412141633 BTU/h |
| 2 W | 6.824283266 BTU/h |
| 3 W | 10.2364249 BTU/h |
| 5 W | 17.06070817 BTU/h |
| 10 W | 34.12141633 BTU/h |
| 20 W | 68.24283266 BTU/h |
| 25 W | 85.30354083 BTU/h |
| 50 W | 170.6070817 BTU/h |
| 100 W | 341.2141633 BTU/h |
| 250 W | 853.0354083 BTU/h |
| 500 W | 1706.070817 BTU/h |
| 1000 W | 3412.141633 BTU/h |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many BTUs per hour are in one watt?
- One watt is about 3.412141633 BTUs per hour.
- How do I convert BTUs per hour to watts?
- To convert BTUs per hour to watts, multiply the number of BTUs per hour by about 0.2930710702. The formula is W = BTU/h × 0.2930710702.
- Is this conversion exact?
- Yes. Both units have exact definitions, but the factor has more decimal places than can be shown, so displayed results are rounded. The calculator works with 50 significant digits before rounding.
- Which is larger, a watt or a BTU per hour?
- A watt is about 3.412141633 times larger than a BTU per hour. In other words, a BTU per hour is about 0.2930710702 of a watt.