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kW to BTU/hr Converter

Convert kilowatt to btu per hour instantly. 1 kW = 3412.141635 BTU/hr, worked steps and a full reference table.

Formula
BTU/hr = kW × 3412.141635

How to use it

  • Type the value in kilowatt — the result updates as you type.
  • Use Swap to flip the direction, or change either dropdown to convert between any two units.
  • Click the result to copy it. The URL updates too, so you can bookmark or share the exact conversion.

Examples

1 kW3412.141635 BTU/hr
5 kW17060.70818 BTU/hr
10 kW34121.41635 BTU/hr
100 kW341214.1635 BTU/hr

One kilowatt equals 3412.1416 btu per hours (BTU/hr). To convert kilowatts to btu per hours, multiply by 3412.1416; to go back the other way, multiply by 0.00029307107 instead.

The converter above does it as you type and shows the working underneath, so you can check the arithmetic rather than take the number on trust.

What kilowatts and btu per hours actually measure

Kilowatt (kW) — A kilowatt is a thousand watts. Heaters, EV chargers, motors and domestic electricity supply.

BTU per hour (BTU/hr) — BTU per hour measures heat flow — one British thermal unit each hour. Air conditioning, heating and boiler ratings.

kW to BTU/hr conversion table

The most common values, worked out in advance. Anything not listed can be typed straight into the converter.

kWBTU/hr
1 kW3412.1416 BTU/hr
2 kW6824.2833 BTU/hr
5 kW17060.708 BTU/hr
10 kW34121.416 BTU/hr
25 kW85303.541 BTU/hr
50 kW170607.08 BTU/hr
100 kW341214.16 BTU/hr

How to convert kilowatts to btu per hours by hand

Multiply the number of kilowatts by 3412.1416.

For example, 25 kW × 3412.1416 = 85303.541 BTU/hr.

Going the other way, divide by 3412.1416 — or multiply by 0.00029307107, which is the same thing and easier to do in your head.

Everything runs in your browser

There is no server involved in the calculation. The numbers you type never leave your device, nothing is logged, and the page keeps working with no connection once it has loaded. That is not a marketing line — it is simply how the tool is built, because a calculation like this has no reason to touch a network.

Questions people ask

How many BTU/hr are in 1 kW?

1 kW equals exactly 3412.141635 BTU/hr. Multiply any value in kilowatt by 3412.141635 to get btu per hour.

Is anything uploaded to a server?

No. The whole calculation happens in your browser. Nothing is sent anywhere, and the page keeps working offline once loaded.

Runs entirely in your browser. Nothing you type is uploaded, logged or shared.

Last updated 18 August 2026