NiftyRecipe Online energy conversion
kWh/BTU 3412.141633 MJ/cal 239005.736138 kcal/cal 1000 kcal/BTU 3.965667 cal/kJ 0.004184 BTU/kcal 0.252164
cal / BTU

1000 calories in BTU

3.965667 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 250 calories in BTU 3000 calories in BTU 120 calories in BTU 100 calories in BTU 5000 calories in BTU 10 calories in BTU 750 calories in BTU 1 calorie in BTU 50 calories in BTU 2500 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
FAQ for cal → BTU
Reverse?

1 BTU ≈ 252.164401 calorie.

How much is 1000 calories in BTU?

3.965667 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.

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)

1000 calories in BTU

1000 calories is 3.965667 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 3.965667 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.