Convert BTU per Hour to Watts
1 BTU per hour (BTU/h) equals 0.2930710702 watts (W).
1 BTU/h = 0.2930710702 W
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk BTU per hour to watt converter to paste a column from Excel.
How to Convert BTU per Hour to Watt
- 1 BTU/h = 0.2930710702 W
- 1 W = 3.412141633 BTU/h
- Example: convert 12000 BTU/h to W: 12000 BTU/h = 12000 × 0.2930710702 W = 3516.852842 W
Formula
W = BTU/h × 0.2930710701722
or W = BTU/h ÷ 3.412141633128
Derivation from SI units:
- 1 BTU/h = 1055.05585262 J ÷ 3600 s = 0.29307107 W
- 1 W = 1 J/s = 1 kg·m²·s⁻³
Both units are defined exactly, so the factor is exact. BTU per Hour definition: BTU per hour; Watt definition: watt.
Worked examples
- A 12000 BTU/h air conditioner has a cooling capacity of 3516.852842 W.
12000 BTU/h × 0.2930710702 = 3516.852842 W - A 5000 BTU/h window unit is 1465.355351 W.
5000 BTU/h × 0.2930710702 = 1465.355351 W
BTU per Hour to Watt conversion table
| BTU per Hour (BTU/h) | Watts (W) |
|---|---|
| 1000 BTU/h | 293.0710702 W |
| 3412 BTU/h | 999.9584914 W |
| 5000 BTU/h | 1465.355351 W |
| 6000 BTU/h | 1758.426421 W |
| 8000 BTU/h | 2344.568561 W |
| 9000 BTU/h | 2637.639632 W |
| 10000 BTU/h | 2930.710702 W |
| 12000 BTU/h | 3516.852842 W |
| 18000 BTU/h | 5275.279263 W |
| 24000 BTU/h | 7033.705684 W |
| 36000 BTU/h | 10550.55853 W |
| 48000 BTU/h | 14067.41137 W |
| 60000 BTU/h | 17584.26421 W |
| 80000 BTU/h | 23445.68561 W |
| 100000 BTU/h | 29307.10702 W |
Where it's used
US heating and cooling equipment rated in BTU/h is converted to watts for heat-load calculations and international comparisons.
BTU per Hour to other power units
| Conversion | 1 BTU/h equals |
|---|---|
| BTU per hour to watt | 0.2930710702 W |
| BTU per hour to milliwatt | 293.0710702 mW |
| BTU per hour to kilowatt | 0.0002930710702 kW |
| BTU per hour to megawatt | 2.930710702 × 10⁻⁷ MW |
| BTU per hour to horsepower | 0.0003930147789 hp |
| BTU per hour to metric horsepower | 0.0003984657624 PS |
| BTU per hour to refrigeration ton | 0.00008333333333 TR |
| BTU per hour to kilocalorie per hour | 0.2519957611 kcal/h |
| BTU per hour to foot-pound per second | 0.2161581284 ft·lbf/s |
Frequently asked questions
How many watts is 1000 BTU/h?
1000 BTU/h = 293.1 W.
How many watts are in 1 BTU per hour?
1 BTU/h = 0.2930710702 W.
How do I convert BTU per hour to watts?
Multiply the value in BTU/h by 0.2930710702, or divide it by 3.412141633. For example, 12000 BTU/h × 0.2930710702 = 3516.852842 W.
Is the BTU/h to W conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "British thermal unit_IT per hour".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4, coherent derived units with special names.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert BTU per Hour to Watts. Retrieved October 17, 2026, from https://scientificconverters.com/power/btu-per-hour-to-watts/
IEEE
Scientific Converters, "Convert BTU per Hour to Watts," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/btu-per-hour-to-watts/