Convert Kilowatts to BTU per Hour
1 kilowatt (kW) equals 3412.141633 BTU per hour (BTU/h).
1 kW = 3412.141633 BTU/h
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilowatt to BTU per hour converter to paste a column from Excel.
How to Convert Kilowatt to BTU per Hour
- 1 kW = 3412.141633 BTU/h
- 1 BTU/h = 0.0002930710702 kW
- Example: convert 15 kW to BTU/h: 15 kW = 15 × 3412.141633 BTU/h = 51182.1245 BTU/h
Formula
BTU/h = kW × 3412.141633128
Derivation from SI units:
- 1 kW = 10³ W
- 1 BTU/h = 1055.05585262 J ÷ 3600 s = 0.29307107 W
- 1 kW = 1000 W ÷ 0.2930710701722 W per BTU/h = 3412.141633128 BTU/h
Both units are defined exactly, so the factor is exact. Kilowatt definition: kilowatt; BTU per Hour definition: BTU per hour.
Worked examples
- A reading of 3.5 kW converts to 11942.49572 BTU/h.
3.5 kW × 3412.141633 = 11942.49572 BTU/h - A value of 22 kW is 75067.11593 BTU/h.
22 kW × 3412.141633 = 75067.11593 BTU/h
Kilowatt to BTU per Hour conversion table
| Kilowatts (kW) | BTU per Hour (BTU/h) |
|---|---|
| 0.5 kW | 1706.070817 BTU/h |
| 0.75 kW | 2559.106225 BTU/h |
| 1 kW | 3412.141633 BTU/h |
| 1.5 kW | 5118.21245 BTU/h |
| 2.2 kW | 7506.711593 BTU/h |
| 3 kW | 10236.4249 BTU/h |
| 3.5 kW | 11942.49572 BTU/h |
| 5 kW | 17060.70817 BTU/h |
| 7.5 kW | 25591.06225 BTU/h |
| 10 kW | 34121.41633 BTU/h |
| 11 kW | 37533.55796 BTU/h |
| 15 kW | 51182.1245 BTU/h |
| 22 kW | 75067.11593 BTU/h |
| 37 kW | 126249.2404 BTU/h |
| 50 kW | 170607.0817 BTU/h |
| 75 kW | 255910.6225 BTU/h |
| 100 kW | 341214.1633 BTU/h |
| 150 kW | 511821.245 BTU/h |
| 250 kW | 853035.4083 BTU/h |
Where it's used
Kilowatts are used for engine and motor power (1 kW ≈ 1.34 hp), while BTU per hour appear in air-conditioner and heat-pump capacity (e.g. 12 000 BTU/h). Both measure power (energy per unit time), so the conversion is a fixed factor.
Kilowatt to other power units
| Conversion | 1 kW equals |
|---|---|
| kilowatt to watt | 1000 W |
| kilowatt to milliwatt | 1000000 mW |
| kilowatt to megawatt | 0.001 MW |
| kilowatt to horsepower | 1.34102209 hp |
| kilowatt to metric horsepower | 1.359621617 PS |
| kilowatt to BTU per hour | 3412.141633 BTU/h |
| kilowatt to refrigeration ton | 0.2843451361 TR |
| kilowatt to kilocalorie per hour | 859.8452279 kcal/h |
| kilowatt to foot-pound per second | 737.5621493 ft·lbf/s |
Frequently asked questions
How many BTU per hour are in 1 kilowatt?
1 kW = 3412.141633 BTU/h.
How do I convert kilowatts to BTU per hour?
Multiply the value in kW by 3412.141633. For example, 15 kW × 3412.141633 = 51182.1245 BTU/h.
Is the kW to BTU/h 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
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- 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".
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 Kilowatts to BTU per Hour. Retrieved October 17, 2026, from https://scientificconverters.com/power/kilowatts-to-btu-per-hour/
IEEE
Scientific Converters, "Convert Kilowatts to BTU per Hour," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/kilowatts-to-btu-per-hour/