Foot-pound (ft⋅lb) - Unit Information & Conversion

Symbol:ft⋅lb
Plural:foot-pounds
Category:Energy

🔄 Quick Convert Foot-pound

What is a Foot-pound?

Foot-pound (ft⋅lb) = energy to lift 1 pound by 1 foot = 1.356 J. Used in ballistics (rifle: 1,000-3,000 ft⋅lb), mechanics, impact energy. Not same as torque (lbf⋅ft). 737 ft⋅lb = 1 kJ.

History of the Foot-pound

Standard energy unit used in science, engineering, and industry. Conversion: 1 ft⋅lb = 1.356 joules.

Quick Answer

What is Foot-pound? Foot-pound (ft⋅lb) = energy to lift 1 pound by 1 foot = 1.356 J. Used in ballistics (rifle: 1,000-3,000 ft⋅lb), mechanics, impact energy. Not same as torque (lbf⋅ft). 737 ft⋅lb = 1 kJ. Use our energy converter for instant conversions.

Definition

1 ft⋅lb = 1.356 joules (J)

Common Uses

Used in physics, engineering, energy systems, and scientific calculations where this energy scale is appropriate for the application.

Foot-pound Conversion Formulas

To Joule:

1 ft⋅lb = 1.355818 J
Example: 5 foot-pounds = 6.77909 joules

To Kilojoule:

1 ft⋅lb = 0.001356 kJ
Example: 5 foot-pounds = 0.006779 kilojoules

To Megajoule:

1 ft⋅lb = 0.000001 MJ
Example: 5 foot-pounds = 0.000007 megajoules

To Gigajoule:

1 ft⋅lb = 1.3558e-9 GJ
Example: 5 foot-pounds = 6.7791e-9 gigajoules

To Watt-hour:

1 ft⋅lb = 0.000377 Wh
Example: 5 foot-pounds = 0.001883 watt-hours

To Kilowatt-hour:

1 ft⋅lb = 3.7662e-7 kWh
Example: 5 foot-pounds = 0.000002 kilowatt-hours

To Megawatt-hour:

1 ft⋅lb = 3.7662e-10 MWh
Example: 5 foot-pounds = 1.8831e-9 megawatt-hours

To Calorie:

1 ft⋅lb = 0.324048 cal
Example: 5 foot-pounds = 1.620241 calories

To Kilocalorie:

1 ft⋅lb = 0.000324 kcal
Example: 5 foot-pounds = 0.00162 kilocalories

To British Thermal Unit:

1 ft⋅lb = 0.001285 BTU
Example: 5 foot-pounds = 0.006425 BTUs

To Therm:

1 ft⋅lb = 1.2851e-8 therm
Example: 5 foot-pounds = 6.4253e-8 therms

To Electronvolt:

1 ft⋅lb = N/A eV
Example: 5 foot-pounds = N/A electronvolts

To Erg:

1 ft⋅lb = 13558180 erg
Example: 5 foot-pounds = 67790900 ergs

To Quad:

1 ft⋅lb = 1.2851e-18 quad
Example: 5 foot-pounds = 6.4253e-18 quads

Frequently Asked Questions

Formula: J = ft⋅lb × 1.356 Foot-pound to Joules converter →

Convert Foot-pound

Need to convert Foot-pound to other energy units? Use our conversion tool.