Convert foot-pounds to british thermal units
1 ft·lbf = 0.00128506746346 BTU — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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Show this value in all 39 energy & work units
- Petajoules PJ 1.35581794833e-15
- Terajoules TJ 1.35581794833e-12
- Gigajoules GJ 1.35581794833e-9
- Megajoules MJ 0.000 001 355 817 948 33
- Kilojoules kJ 0.001 355 817 948 33
- Joules J 1.355 817 948 33
- Millijoules mJ 1355.817 948 33
- Microjoules µJ 1 355 817.948 33
- Nanojoules nJ 1 355 817 948.33
- Watt-hours Wh 0.000 376 616 096 759
- Kilowatt-hours kWh 0.000 000 376 616 096 759
- Megawatt-hours MWh 3.76616096759e-10
- Gigawatt-hours GWh 3.76616096759e-13
- Terawatt-hours TWh 3.76616096759e-16
- Calorie (thermochemical)s cal 0.324 048 266 81
- Kilocalories kcal 0.000 324 048 266 81
- Calorie (IT)s cal (IT) 0.323 831 553 533
- Kilocalorie (IT)s kcal (IT) 0.000 323 831 553 533
- British thermal units BTU 0.001 285 067 463 46
- BTU (thermochemical)s BTU (th) 0.001 285 927 773 82
- Million BTUs MMBTU 1.28506746346e-9
- Therm (US)s thm 1.28537429544e-8
- Therm (EC)s thm (EC) 1.28506728395e-8
- Electronvolts eV 8.46235002783e+18
- Kiloelectronvolts keV 8 462 350 027 830 000
- Megaelectronvolts MeV 8 462 350 027 830
- Gigaelectronvolts GeV 8 462 350 027.83
- Teraelectronvolts TeV 8 462 350.027 83
- Ergs erg 13 558 179.4833
- Foot-pounds ft·lbf 1
- Inch-pounds in·lbf 12
- Foot-poundals ft·pdl 32.174 048 556 4
- Horsepower-hours hp·h 0.000 000 505 050 505 051
- Tonne of TNTs t TNT 3.2404826681e-10
- Kiloton of TNTs kt TNT 3.2404826681e-13
- Megaton of TNTs Mt TNT 3.2404826681e-16
- Hartrees Eₕ 3.10985627536e+17
- Rydbergs Ry 6.21971255072e+17
- Quads quad 1.28506746346e-18
Every row is Foot-pound (ft·lbf) converted through the joule, in exact rational arithmetic.
How to convert foot-pounds to british thermal units
Multiply the number of foot-pounds by 0.00128506746346 to get british thermal units.
British thermal unit: International Table BTU, exactly 1055.055 852 62 J. HVAC capacity is quoted in BTU/h.
Foot-pound to British thermal unit conversion table
| Foot-pounds (ft·lbf) | British thermal units (BTU) |
|---|---|
| 1 ft·lbf | 0.001 285 067 5 |
| 2 ft·lbf | 0.002 570 134 9 |
| 3 ft·lbf | 0.003 855 202 4 |
| 5 ft·lbf | 0.006 425 337 3 |
| 10 ft·lbf | 0.012 850 675 |
| 20 ft·lbf | 0.025 701 349 |
| 25 ft·lbf | 0.032 126 687 |
| 50 ft·lbf | 0.064 253 373 |
| 100 ft·lbf | 0.128 506 75 |
| 250 ft·lbf | 0.321 266 87 |
| 500 ft·lbf | 0.642 533 73 |
| 1000 ft·lbf | 1.285 067 5 |
British thermal unit to Foot-pound conversion table
| British thermal units (BTU) | Foot-pounds (ft·lbf) |
|---|---|
| 1 BTU | 778.169 26 |
| 2 BTU | 1556.3385 |
| 3 BTU | 2334.5078 |
| 5 BTU | 3890.8463 |
| 10 BTU | 7781.6926 |
| 20 BTU | 15 563.385 |
| 25 BTU | 19 454.232 |
| 50 BTU | 38 908.463 |
| 100 BTU | 77 816.926 |
| 250 BTU | 194 542.32 |
| 500 BTU | 389 084.63 |
| 1000 BTU | 778 169.26 |
Frequently asked
How many british thermal units are in a foot-pound?
One foot-pound equals 0.001285067463 british thermal units (ft·lbf → BTU). That figure is exact, not rounded.
How do you convert foot-pounds to british thermal units?
Multiply the number of foot-pounds by 0.00128506746346 to get british thermal units.
What is 1 BTU in foot-pounds?
One british thermal unit is 778.1692623 foot-pounds.
What is 10 ft·lbf in BTU?
10 ft·lbf = 0.012 850 675 BTU.
What exactly is a british thermal unit?
International Table BTU, exactly 1055.055 852 62 J. HVAC capacity is quoted in BTU/h.