Kilowatt-hours to BTU converter

Quick reference

Kilowatt-hours	BTU
1	3,412.141633
2	6,824.283266
5	17,060.708166
10	34,121.416331
20	68,242.832663
25	85,303.540828
50	170,607.081656
100	341,214.163313
250	853,035.408282
500	1,706,070.816564
1,000	3,412,141.633128

About energy units

Energy's unit zoo exists because each field measured it before agreeing on the joule: food labels use kilocalories (confusingly printed as 'Calories'), electricity bills use kilowatt-hours, US heating equipment uses BTU, and chemistry uses the small calorie. Exact bridges: one food kilocalorie is 4,184 joules, one kilowatt-hour is 3.6 million joules (or 3,412 BTU). That means a 2,000 kcal daily diet is about 2.3 kWh, roughly what a fridge uses in a day.

More energy conversions

BTU → Kilowatt-hours Kilocalories (food) → Kilojoules Kilojoules → Kilocalories (food)Calories (small) → Joules BTU → Kilowatt-hours All converters

Frequently asked questions

What is the exact formula for Kilowatt-hours to BTU?

Multiply the Kilowatt-hours value by 3,412.14163313. This comes from the exact unit definitions, not a rounded approximation.

Is this conversion exact?

The underlying ratio is exact where a legal definition exists (for example, 1 inch = 25.4 mm exactly). Displayed results are rounded to six decimal places for readability.

Can I convert BTU back to Kilowatt-hours?

Yes. Use the reverse converter linked below, or just swap which field you type into: the live converter recalculates either direction.