Foot-pounds force to British thermal units (IT)
1 ft·lbf ≈ 0.001285 BTU. Edit either value to convert instantly.
Conversion formula
BTU = ft·lbf × (1.3558179483314) × (50,000,000 / 5.2752792631 × 10¹⁰)1 ft·lbf ≈ 0.00128507 BTU
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
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
Conversion table
| ft·lbf | BTU |
|---|---|
| ≈ 0.00128507 | |
| ≈ 0.00257013 | |
| ≈ 0.00642534 | |
| ≈ 0.0128507 | |
| ≈ 0.019276 | |
| ≈ 0.0257013 | |
| ≈ 0.0321267 | |
| ≈ 0.038552 | |
| ≈ 0.0514027 | |
| ≈ 0.057828 |
| ft·lbf | BTU |
|---|---|
| ≈ 0.0642534 | |
| ≈ 0.077104 | |
| ≈ 0.0899547 | |
| ≈ 0.102805 | |
| ≈ 0.115656 | |
| ≈ 0.128507 | |
| ≈ 0.19276 | |
| ≈ 0.205611 | |
| ≈ 0.218461 | |
| ≈ 0.231312 |
Frequently asked questions
How many British thermal units (IT) are in 1 foot-pound force?
1 ft·lbf ≈ 0.001285 BTU. BTU = ft·lbf × (1.3558179483314) × (50,000,000 / 5.2752792631 × 10¹⁰)
How do I convert ft·lbf to BTU?
BTU = ft·lbf × (1.3558179483314) × (50,000,000 / 5.2752792631 × 10¹⁰)
Is 1 foot-pound force bigger than 1 British thermal unit (IT)?
1 ft·lbf ≈ 0.001285 BTU.
Related conversions
All quantities
LengthMass / weightVolumeTemperatureAreaSpeedTimePressurePowerData storageFuel economyAngleFrequencyForceTorqueDensityData transfer rateAccelerationElectric chargeElectric currentVoltageCapacitanceAbsorbed doseDynamic viscosityElectrical resistanceIlluminanceKinematic viscosityLuminanceMagnetic flux densityMass flow rateRadioactivityVolumetric flow rateElectrical conductanceEquivalent doseInductanceMagnetic fluxMolar concentrationSolution mass concentrationAmount of substanceAngular velocityCountLuminous fluxLuminous intensityMagnetic field strengthMagnetomotive forceAbsorbed dose rateRadiation exposureThermal conductivity