NiftyRecipe Online energy conversion
kJ/BTU 0.947817 MJ/cal 239005.736138 BTU/kcal 0.252164 MJ/kWh 0.277778 cal/BTU 0.003966 kJ/kcal 0.239006
cal / BTU

1 calorie in BTU

0.003966 BTU

1 cal = 0.003966 BTU · factor

Factor: 1 calorie = 0.003966 BTU. Reverse: 1 BTU ≈ 252.164401 calorie.

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

Common values

BTU to calorie 2 calories in BTU 5 calories in BTU 10 calories in BTU 20 calories in BTU 25 calories in BTU 50 calories in BTU 75 calories in BTU 100 calories in BTU 120 calories in BTU 150 calories in BTU

Same amount, other units

1 calorie → kcal 1 calorie → kJ 1 calorie → kWh 1 calorie → MJ
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

All amounts for this pair

FAQ for cal → BTU
1 calorie in BTU

1 calorie is 0.003966 BTU on NiftyRecipe using a fixed thermal-energy factor.

British thermal units show up on air-conditioner nameplates, furnace ratings and heating-load notes. Converting them to kcal, kJ or kWh uses 1 calorie = 0.003966 BTU, so this amount becomes 0.003966 BTU. Reverse: 1 BTU ≈ 252.164401 calorie.

The text stays on capacity and energy equivalence-not oven temperatures or duct geometry-so these pages stay distinct from food-label converters. Adjust the amount above for different appliance ratings or textbook examples.