Convert British thermal unit to foot-pound

1 BTU = 778.1692623 ft⋅lb

1 BTU = 778 ft⋅lb

1 BTU in every energy unit

joule	1,060 J
kilojoule	1.06 kJ
megajoule	0.00106 MJ
calorie	252 cal
kilocalorie	0.252 kcal
watt-hour	0.293 Wh
kilowatt-hour	0.000293 kWh
British thermal unit	1 BTU
foot-pound	778 ft⋅lb
electron volt	6.59e+21 eV
kiloelectron volt	6.59e+18 keV
megaelectron volt	6.59e+15 MeV

How the conversion works

Multiply by 778.1692623 to go from British thermal unit to foot-pound, or divide by it to go back. Every conversion on this site routes through the SI value (J) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.

Going the other way? foot-pound to British thermal unit — 1 ft⋅lb = 0.001285067463 BTU.

British thermal unit to foot-pound — common values

1 BTU	778.16926 ft⋅lb
2 BTU	1,556.3385 ft⋅lb
3 BTU	2,334.5078 ft⋅lb
5 BTU	3,890.8463 ft⋅lb
10 BTU	7,781.6926 ft⋅lb
15 BTU	11,672.539 ft⋅lb
20 BTU	15,563.385 ft⋅lb
25 BTU	19,454.232 ft⋅lb
50 BTU	38,908.463 ft⋅lb
75 BTU	58,362.695 ft⋅lb
100 BTU	77,816.926 ft⋅lb
250 BTU	194,542.32 ft⋅lb
500 BTU	389,084.63 ft⋅lb
1000 BTU	778,169.26 ft⋅lb

Other energy conversions

J → ft⋅lb kJ → ft⋅lb MJ → ft⋅lb cal → ft⋅lb kcal → ft⋅lb Wh → ft⋅lb kWh → ft⋅lb BTU → J

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