calorie (cal) → British thermal unit (BTU)

1 cal = 0.00397 BTU · ⇄ British thermal unit (BTU) → calorie (cal)

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⚙ Output Number Format1,234.56

All units in this category

Converted Value
jouleJ—
kilojoulekJ—
megajouleMJ—
gigajouleGJ—
watt-hourWh—
kilowatt-hourkWh—
megawatt-hourMWh—
caloriecal—
kilocaloriekcal—
British thermal unitBTU—
thermthm—
electronvolteV—
ergerg—
foot-poundft⋅lbf—
ton of TNTtTNT—
tonne of oil equivalenttoe—

Conversion Formula & Definition

BTU = cal × 0.00397

1 calorie (cal) = 0.00397 British thermal unit (BTU).

Popular Conversions (Energy)

Quick Conversion Reference Table: calorie (cal) → British thermal unit (BTU)

calorie (cal)British thermal unit (BTU)
0.1 cal0.000397 BTU
0.5 cal0.00198 BTU
1 cal0.00397 BTU
2 cal0.00793 BTU
5 cal0.0198 BTU
10 cal0.0397 BTU
20 cal0.0793 BTU
50 cal0.198 BTU
100 cal0.397 BTU
250 cal0.991 BTU
500 cal1.98 BTU
1,000 cal3.97 BTU