kW to BTU converter
The calculator needs JavaScript. The worked example, formula and figures below show exactly how it works, so you can do the sum yourself. A guide, not advice. Check your supplier's or maker's figures before ordering.
Short answer
Worked example
| You enter | Value |
|---|---|
| Convert | kW to BTU/h |
| Power | 1.5 kW |
1.5 kW = 5,118 BTU/h
| Result | Value |
|---|---|
| BTU per hour | 5,118 BTU/h |
| Kilowatts | 1.5 kW |
| Watts | 1,500 W |
Show the working
- 1.5 kW × 3,412.14 = 5,118 BTU/h
How it works
- BTU/h = kW × 3,412.14
- kW = BTU/h ÷ 3,412.14
- W = kW × 1000
BTU here means BTU per hour, the unit radiator and air conditioner makers quote.
Our default (adjustable)
These are typical planning figures and our own allowances, not facts about your product. Change any of them in the calculator to match your bag, pack or tin.
This calculator has no built-in defaults: every figure comes from you or your product's data.