kW to BTU/hr Converter
1 kW equals 3412.14 BTU per hour. This is the inverse of the BTU/hr to kW conversion. Kilowatts are the standard SI unit for power used in electrical and mechanical equipment...
Formula
Source: Engineering Toolbox, ASHRAE Handbook | Last reviewed: June 7, 2026
Examples
1 kW
= 3412 BTU/hr
1 kW = 3412 BTU/hr
3.517 kW
= 12000 BTU/hr
1 refrigeration ton
10 kW
= 34121 BTU/hr
Quick Reference Table
| kW | BTU/hr |
|---|---|
| 1 | 3412 |
| 2 | 6824 |
| 5 | 17061 |
| 10 | 34121 |
| 50 | 170607 |
| 100 | 341214 |
Where is this used?
Sizing electric heaters rated in kW for US building codes.
Comparing heat pump performance across metric and US data sheets.
Frequently Asked Questions
How many BTU/hr is a 10 kW heater?
10 kW × 3412.14 = 34,121 BTU/hr. This is roughly a 2.8-ton heat pump or a medium-sized residential furnace.
What's the relationship between kW and tons of refrigeration?
1 RT (refrigeration ton) = 3.51685 kW = 12,000 BTU/hr. So kW ÷ 3.517 = RT.
Does this conversion account for efficiency?
No. This is a straight unit conversion. For electric heaters (assumed 100% efficient), electrical kW input ≈ thermal kW output. For heat pumps, multiply by COP.
Reviewed for accuracy
· Last reviewed: June 7, 2026
All calculations are for reference only. Always verify with manufacturer data and a qualified engineer for critical applications. Learn about our editorial process.