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

Quick Reference

1 Foot Pound = 1.285e-3 Btu

1 Btu = 778.1693 Foot Pound

Foot Pound to Btu Conversion Formula

To convert Foot Pound to Btu, multiply by 1.285e-3.

Btu = Foot Pound × 1.285e-3

Foot Pound = Btu × 778.1693

To convert Btu back to Foot Pound, divide by 1.285e-3 (or multiply by 778.1693).

About These Units

About Foot Pound

The foot pound is a unit of length used for measuring distance, height, width, and other linear dimensions.

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.

Foot Pound to Btu Conversion Table

Foot Pound	Btu	Btu	Foot Pound
0.1	1.285e-4	0.1	77.8169
0.5	6.425e-4	0.5	389.0847
1	1.285e-3	1	778.1693
2	2.570e-3	2	1556.34
5	6.425e-3	5	3890.85
10	0.012851	10	7781.69
20	0.025701	20	15563.39
25	0.032127	25	19454.23
50	0.064253	50	38908.47
100	0.128507	100	77816.93
250	0.321267	250	194542.33
500	0.642534	500	389084.66
1000	1.2851	1000	778169.32

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