Convert British Thermal Units to Kilocalories
BTU to kcal · energy conversion
What are british thermal units and kilocalories?
A British thermal unit is the energy to heat one pound of water by 1 °F, used for heating and AC. A kilocalorie (the food Calorie) is 1,000 small calories, the unit on US nutrition labels. For reference: a food Calorie is one kilocalorie (4,184 J), and home electricity is billed in kilowatt-hours.
How to convert british thermal units to kilocalories
1 BTU = 0.252164 kcal. To convert, multiply the number of british thermal units by 0.252164. For example, 5 BTU = 1.26082 kcal, and 20 BTU = 5.04329 kcal. To go the other way, multiply kilocalories by 3.96567 (since 1 kcal = 3.96567 BTU).
British Thermal Units to Kilocalories conversion table
| British Thermal Units (BTU) | Kilocalories (kcal) |
|---|---|
| 1 | 0.252164 |
| 10 | 2.52164 |
| 100 | 25.2164 |
| 500 | 126.082 |
| 1,000 | 252.164 |
| 2,000 | 504.329 |
| 5,000 | 1,260.82 |
FAQ
What is 1 BTU in kcal?
1 BTU = 0.252164 kcal. To convert any amount, multiply the number of british thermal units by 0.252164.
How do I convert kilocalories back to british thermal units?
Go the other way: 1 kcal = 3.96567 BTU, so multiply kilocalories by 3.96567 to get british thermal units.
Is a british thermal unit bigger than a kilocalorie?
No — 1 BTU is the smaller unit, equal to 0.252164 kcal (it takes 3.96567 BTU to make one kcal).
Are these energy conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.