NiftyRecipe Online energy conversion
cal/kWh 0.000001 kJ/BTU 0.947817 BTU/kJ 1.055056 cal/MJ 0.000004 BTU/kcal 0.252164 MJ/kWh 0.277778
cal / BTU

90 calories in BTU

0.35691 BTU

1 cal = 0.003966 BTU · factor

90 calories equals 0.35691 BTU. BTU figures appear on many US heating and air-conditioning specs.

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

Common values

BTU to calorie 1 calorie in BTU 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

Same amount, other units

90 calories → kcal 90 calories → kJ 90 calories → kWh 90 calories → MJ

Related converters

cal → kcal cal → kJ cal → kWh cal → 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
90 calories in BTU

90 calories is 0.35691 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 0.35691 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.