Use this free online calculator to convert Gram Calorie to Btu instantly. This energy conversion tool provides accurate results for all your measurement needs.

Quick Reference

1 Gram Calorie = 3.967e-3 Btu

1 Btu = 252.0560 Gram Calorie

Gram Calorie to Btu Conversion Formula

To convert Gram Calorie to Btu, multiply by 3.967e-3.

Btu = Gram Calorie × 3.967e-3

Gram Calorie = Btu × 252.0560

To convert Btu back to Gram Calorie, divide by 3.967e-3 (or multiply by 252.0560).

About These Units

About Gram Calorie

The gram calorie is a unit of energy used to measure work, heat, or power in various scientific and engineering contexts.

About Btu

The Btu is a unit of heat energy defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. In America the British thermal unit is sometimes called the heat unit. In defining the Btu, it is necessary to specify the temperature of the water; thus there have been several definitions over the years. However, one Btu is equal to about 251.996 (small) calories, or 0.251 996 of the (kilo-)calories counted by dieters. Using the current definition of the calorie (the IT calorie), one Btu equals approximately 778.169 foot pounds, 1.055 056 kilojoules or 0.293 071 watt hour. The symbol BThU has also been used, especially in Britain.

Gram Calorie to Btu Conversion Table

Gram Calorie	Btu	Btu	Gram Calorie
0.1	3.967e-4	0.1	25.2056
0.5	1.984e-3	0.5	126.0280
1	3.967e-3	1	252.0560
2	7.935e-3	2	504.1119
5	0.019837	5	1260.28
10	0.039674	10	2520.56
20	0.079347	20	5041.12
25	0.099184	25	6301.40
50	0.198369	50	12602.80
100	0.396737	100	25205.60
250	0.991843	250	63013.99
500	1.9837	500	126027.99
1000	3.9674	1000	252055.97

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