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Convert calorie to british thermal unit

Here you can quickly calculate how many british thermal unit fit in one calorie.
write a number and we convert instantly
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- scroll: formula · table · questions -

  • 1 cal = 0.003966 BTU
  • 1 BTU = 252.164401 cal

Example: calorie to british thermal unit

  • 1 calorie = 0.003966 british thermal unit

Calorie to british thermal unit conversion table

calorie british thermal unit
1 0.003966
2 0.007931
5 0.019828
10 0.039657
20 0.079313
50 0.198283
100 0.396567

Calorie to british thermal unit formula

To convert calorie to british thermal unit, multiply by 0.003966.

1 cal = 0.003966 BTU
Example: 1 calorie = 0.003966 british thermal unit

Common energy conversion mistakes

  • Food 'calories' are actually kilocalories: 1 kcal = 1,000 cal. A '500-calorie' meal therefore contains 500 kcal, half a million small calories. Labels write the same thing as 'kcal' or as 'Cal' with a capital C.
  • The 'BTU' rating on AC units and heat pumps almost always means BTU per hour, a power, not an amount of energy. A '12,000 BTU' unit delivers about 3.5 kW of cooling continuously, not a fixed energy budget. Compare via 1 kW ≈ 3,412 BTU/h.

Quick calorie and british thermal unit conversion quiz

Score: 0

4 british thermal unit equals 504 calorie.

Correct answer: 4 british thermal unit = 1 010 calorie.

11.5 british thermal unit equals 1 740 calorie.

Correct answer: 11.5 british thermal unit = 2 900 calorie.

141 calorie equals 0.839 british thermal unit.

Correct answer: 141 calorie = 0.559 british thermal unit.

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