NiftyRecipe Online energy conversion
BTU/cal 252.164401 MJ/kcal 239.005736 MJ/cal 239005.736138 kcal/cal 1000 BTU/kWh 0.000293 kWh/MJ 3.6
cal / BTU

Calorie to British thermal unit converter

1 cal = 0.003966 BTU

This is the Calorie to British thermal unit converter. 1 cal = 0.003965666831390877 BTU.

Enter a value and click Calculate - opens the page with the new result

Common values

BTU to calorie 2 calories in BTU 3 calories in BTU 4 calories in BTU 5 calories in BTU 6 calories in BTU 8 calories in BTU 10 calories in BTU 12 calories in BTU 15 calories in BTU 20 calories in BTU
Formula: calorie to BTU

BTU = cal × 0.003966 (1 CAL = 0.003966 BTU)

Reference values: calorie → BTU
cal BTU
1 cal 0.003966 BTU
100 cal 0.396567 BTU
200 cal 0.793133 BTU
500 cal 1.982833 BTU
1000 cal 3.965667 BTU
2000 cal 7.931334 BTU
Common conversions
1 cal → 0.003966 BTU 2 cal → 0.007931 BTU 3 cal → 0.011897 BTU 4 cal → 0.015863 BTU 5 cal → 0.019828 BTU 6 cal → 0.023794 BTU 8 cal → 0.031725 BTU 10 cal → 0.039657 BTU 12 cal → 0.047588 BTU 15 cal → 0.059485 BTU 20 cal → 0.079313 BTU 25 cal → 0.099142 BTU
FAQ for cal → BTU
BTU vs kcal?

Both measure energy. Roughly 1 kcal ≈ 3.97 BTU (IT). Use the exact factor on this page.

Manual conversion?

BTU = cal × 0.003966 (1 CAL = 0.003966 BTU)

Reverse?

1 BTU ≈ 252.164401 calorie.

How much is 1 calorie in BTU?

0.003966 BTU (1 calorie = 0.003966 BTU).

What is a BTU?

British thermal unit-energy needed to raise the temperature of water; common for AC and heating capacity ratings.

How the Calorie to British thermal unit converter works

This hub describes the pair, not a single number.

NiftyRecipe shows the factor and selected amount pages.