BTU to calories
Convert btu to calorie (small) — instant, free, with the formula shown.
1 BTU=252.1644 cal
How to convert btu to calorie (small)
To convert btu to calorie (small), multiply by 252.1644001:
cal = BTU × 252.1644001
For example, 10 BTU × 252.1644 = 2521.644001 cal.
BTU to cal conversion table
| BTU (BTU) | calories (cal) |
|---|---|
| 1 BTU | 252.1644 cal |
| 2 BTU | 504.3288 cal |
| 5 BTU | 1260.822 cal |
| 10 BTU | 2521.644001 cal |
| 25 BTU | 6304.110002 cal |
| 50 BTU | 12608.220005 cal |
| 100 BTU | 25216.44001 cal |
| 250 BTU | 63041.100024 cal |
| 500 BTU | 126082.200048 cal |
| 1000 BTU | 252164.400096 cal |
Other btu conversions
Convert to calorie (small) from another unit
BTU to cal — frequently asked
How many calories are in 1 btu?
1 btu = 252.1644 calories (BTU × 252.1644 = cal).
What is the formula to convert btu to calorie (small)?
Multiply your btu value by 252.1644001 to get calorie (small).
How do I convert 10 BTU to calories?
10 BTU = 2521.644001 cal. For 100 BTU the answer is 25216.44001 cal. Use the calculator on this page for any other value.
When to convert btu to calorie (small)
1Electricity bills (kWh)
2Nutrition labels (kcal / food cal)
3HVAC and heating (BTU, therms)
4Physics and chemistry (J, eV)
Energy conversion — common questions
Is a food calorie the same as a calorie?
No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.
How many joules in 1 kWh?
1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.
What is a BTU?
British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.
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