British thermal units (IT) to Foot-pounds force
1 BTU ≈ 778.2 ft·lbf. Edit either value to convert instantly.
Conversion formula
ft·lbf = BTU × (1,055.05585262) × (2.5 × 10¹⁵ / 3.3895448708285 × 10¹⁵)1 BTU ≈ 778.169 ft·lbf
British thermal unit (IT) (BTU)
British thermal unit (IT) is a unit of energy: 1 BTU = 1,055.05585262 J. Uses the International Table definition (IT), not the thermochemical BTU.
Source: NBSIR 81-2401, Appendix A3.2: International Table British thermal unit
foot-pound force (ft·lbf)
Foot-pound force is a unit of energy: 1 ft·lbf = 1.3558179483314 J.
Source: NIST SP 811, Appendix B.9: conversion factors by quantity
Conversion table
| BTU | ft·lbf |
|---|---|
| ≈ 778.169 | |
| ≈ 1,556.34 | |
| ≈ 3,890.85 | |
| ≈ 7,781.69 | |
| ≈ 11,672.5 | |
| ≈ 15,563.4 | |
| ≈ 19,454.2 | |
| ≈ 23,345.1 | |
| ≈ 31,126.8 | |
| ≈ 35,017.6 |
| BTU | ft·lbf |
|---|---|
| ≈ 38,908.5 | |
| ≈ 46,690.2 | |
| ≈ 54,471.8 | |
| ≈ 62,253.5 | |
| ≈ 70,035.2 | |
| ≈ 77,816.9 | |
| ≈ 116,725 | |
| ≈ 124,507 | |
| ≈ 132,289 | |
| ≈ 140,070 |
Frequently asked questions
How many foot-pounds force are in 1 British thermal unit (IT)?
1 BTU ≈ 778.2 ft·lbf. ft·lbf = BTU × (1,055.05585262) × (2.5 × 10¹⁵ / 3.3895448708285 × 10¹⁵)
How do I convert BTU to ft·lbf?
ft·lbf = BTU × (1,055.05585262) × (2.5 × 10¹⁵ / 3.3895448708285 × 10¹⁵)
Is 1 British thermal unit (IT) bigger than 1 foot-pound force?
1 BTU ≈ 778.2 ft·lbf.
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