Use this free online calculator to convert Btu to Kilocalorie [I T ] instantly. This energy conversion tool provides accurate results for all your measurement needs.

Quick Reference

1 Btu = 0.251996 Kilocalorie [I T ]

1 Kilocalorie [I T ] = 3.9683 Btu

Btu to Kilocalorie [I T ] Conversion Formula

To convert Btu to Kilocalorie [I T ], multiply by 0.251996.

Kilocalorie [I T ] = Btu × 0.251996

Btu = Kilocalorie [I T ] × 3.9683

To convert Kilocalorie [I T ] back to Btu, divide by 0.251996 (or multiply by 3.9683).

About These Units

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.

About Kilocalorie [I T ]

The kilocalorie [I.T.] is a unit of energy used to measure work, heat, or power in various scientific and engineering contexts.

Btu to Kilocalorie [I T ] Conversion Table

Btu	Kilocalorie [I T ]	Kilocalorie [I T ]	Btu
0.1	0.025200	0.1	0.396832
0.5	0.125998	0.5	1.9842
1	0.251996	1	3.9683
2	0.503992	2	7.9366
5	1.2600	5	19.8416
10	2.5200	10	39.6832
20	5.0399	20	79.3664
25	6.2999	25	99.2080
50	12.5998	50	198.4160
100	25.1996	100	396.8321
250	62.9989	250	992.0801
500	125.9979	500	1984.16
1000	251.9958	1000	3968.32

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