Skip to content

Foot-pound to Joule

1 ft·lbf = 1.3558179 J

Calculator

0

Angle unit

Precision & format
10

1 ft·lbf equals

1.355817948J

All 21 units
  • JouleJ
    1.355817948
  • KilojoulekJ
    0.001355817948
  • MegajouleMJ
    0.000001355817948
  • GigajouleGJ
    1.355817948 × 10⁻⁹
  • MillijoulemJ
    1,355.817948
  • Calorie (thermochemical)cal
    exactly 4.184 J
    0.3240482668
  • Kilocalorie (thermochemical)kcal
    food Calorie
    0.0003240482668
  • Calorie (IT)cal (IT)
    International Table
    0.3238315535
  • Kilocalorie (IT)kcal (IT)
    0.0003238315535
  • Watt-hourWh
    0.0003766160968
  • Kilowatt-hourkWh
    3.766160968 × 10⁻⁷
  • Megawatt-hourMWh
    3.766160968 × 10⁻¹⁰
  • BTU (IT)BTU
    International Table
    0.001285067463
  • BTU (thermochemical)BTU (th)
    0.001285927451
  • Therm (US)thm
    100 000 BTU
    1.285374295 × 10⁻⁸
  • Foot-poundft·lbf
    1
  • Ergerg
    13,558,179.48
  • ElectronvolteV
    8.462350028 × 10¹⁸
  • KiloelectronvoltkeV
    8.462350028 × 10¹⁵
  • MegaelectronvoltMeV
    8,462,350,028,000
  • Tonne of oil equivalenttoe
    3.238315535 × 10⁻¹¹

Foot-pound to Joule table

Common Foot-pound values converted to Joule
Foot-pound (ft·lbf)Joule (J)
11.3558179
22.7116359
56.7790897
1013.558179
2027.116359
5067.790897
100135.58179
250338.95449
500677.90897
1,0001,355.8179

How the conversion works

Multiply the foot-pound figure by 1.355817948 to get joule. Every factor on this site is anchored to the SI base unit for energy, so the same number is used everywhere it appears.

Going the other way, 1 J = 0.73756215 ft·lbf — see joule to foot-pound.

See all 21 energy units →

Try one

↑↓↵esc