Convert British thermal unit to foot-pound

1 BTU = 778.1692623 ft⋅lb

1 BTU = 778.17 ft⋅lb

1 BTU in every energy unit

electron volt	6.5851e+21 eV
hartree	2.4200e+20 Eh
kiloelectron volt	6.5851e+18 keV
megaelectron volt	6.5851e+15 MeV
gigaelectron volt	6,585,100,000,000 GeV
nanojoule	1,055,100,000,000 nJ
erg	10,551,000,000 erg
teraelectron volt	6,585,100,000 TeV
microjoule	1,055,100,000 µJ
millijoule	1,055,100 mJ
inch-pound	9,338 in·lb
joule	1,055.1 J
foot-pound	778.17 ft⋅lb
calorie	252.16 cal
calorie (International Table)	252 cal IT
kilojoule	1.0551 kJ
BTU (thermochemical)	1.0007 BTU th
British thermal unit	1 BTU
watt-hour	0.29307 Wh
kilocalorie	0.25216 kcal
megajoule	0.0010551 MJ
horsepower-hour	0.00039301 hp·h
kilowatt-hour	0.00029307 kWh
therm	0.00001 therm
gigajoule	0.0000010551 GJ
million BTU	0.000001 MMBTU
megawatt-hour	2.9307e-07 MWh
ton of TNT	2.5216e-07 t TNT
tonne of oil equivalent	2.5200e-08 toe
terajoule	1.0551e-09 TJ
gigawatt-hour	2.9307e-10 GWh
kiloton of TNT	2.5216e-10 kt TNT
petajoule	1.0551e-12 PJ
terawatt-hour	2.9307e-13 TWh
megaton of TNT	2.5216e-13 Mt TNT
quad	1.0000e-15 quad

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

All energy units →

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