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Joules to Foot-pounds (energy) Converter

1 J = 0.737562 ft·lbf (joule → foot-pound (energy))

1 J = 0.737562 ft·lbf

1 joule equals 0.737562 foot-pounds (energy). To convert joules to foot-pounds (energy), multiply the joule value by 0.737562. For quick reference: 1 J = 0.737562 ft·lbf, 5 J = 3.68781 ft·lbf, 10 J = 7.37562 ft·lbf, 100 J = 73.7562 ft·lbf.

0.737562
FormulaFoot-pounds (energy) = Joules × 0.737562
Quick

How to convert joules to foot-pounds (energy)

  1. Take your value

    Start with your value in joules.

  2. Multiply by 0.737562

    Multiply the joule value by 0.737562. This is the exact conversion factor from joules to foot-pounds (energy).

  3. Read the result

    The product is your value in foot-pounds (energy). For example, 5 J × 0.737562 = 3.68781 ft·lbf.

Conversion formula

The exact factor from joules to foot-pounds (energy) is 0.737562.

Foot-pounds (energy) = Joules × 0.737562

Joules to Foot-pounds (energy) conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Conversion table from joules to foot-pounds (energy)
Joules (J)Foot-pounds (energy) (ft·lbf)
0.001 J0.00073756 ft·lbf
0.01 J0.0073756 ft·lbf
0.1 J0.073756 ft·lbf
0.5 J0.36878 ft·lbf
1 J0.73756 ft·lbf
1.5 J1.1063 ft·lbf
2 J1.4751 ft·lbf
5 J3.6878 ft·lbf
10 J7.3756 ft·lbf
20 J14.751 ft·lbf
50 J36.878 ft·lbf
100 J73.756 ft·lbf
200 J147.51 ft·lbf
250 J184.39 ft·lbf
500 J368.78 ft·lbf
1000 J737.56 ft·lbf
2000 J1475.1 ft·lbf
2500 J1843.9 ft·lbf
3600 J2655.2 ft·lbf
5000 J3687.8 ft·lbf
7500 J5531.7 ft·lbf
10000 J7375.6 ft·lbf
25000 J18439 ft·lbf
50000 J36878 ft·lbf
100000 J73756 ft·lbf
250000 J184391 ft·lbf
500000 J368781 ft·lbf
1000000 J737562 ft·lbf
2000000 J1475124 ft·lbf
3600000 J2655224 ft·lbf
5000000 J3687811 ft·lbf
10000000 J7375621 ft·lbf
25000000 J18439054 ft·lbf
50000000 J36878107 ft·lbf
100000000 J73756215 ft·lbf
250000000 J184390537 ft·lbf
500000000 J368781075 ft·lbf
1000000000 J737562149 ft·lbf
2000000000 J1475124299 ft·lbf
5000000000 J3687810746 ft·lbf
10000000000 J7375621493 ft·lbf
20000000000 J14751242986 ft·lbf
50000000000 J36878107464 ft·lbf
100000000000 J73756214928 ft·lbf
1000000000000 J737562149277 ft·lbf
10000000000000 J7375621492773 ft·lbf
100000000000000 J73756214927727 ft·lbf
1000000000000000 J737562149277265 ft·lbf
10000000000000000 J7.3756 × 10^15 ft·lbf
100000000000000000 J7.3756 × 10^16 ft·lbf

Real-world reference

A heartbeat releases about 1 J of mechanical work. Lifting an apple 1 m takes roughly 1 J. In foot-pounds (energy), that gives you: 1 J = 0.737562 ft·lbf, 10 J = 7.37562 ft·lbf, 100 J = 73.7562 ft·lbf.

Frequently asked questions

How many foot-pounds (energy) are in 1 joule?
1 joule equals 0.737562 foot-pounds (energy).
How do I convert joules to foot-pounds (energy)?
Multiply the joule value by 0.737562. So x J × 0.737562 = the equivalent in ft·lbf.
What is 5 joules in foot-pounds (energy)?
5 joules equals 3.68781 foot-pounds (energy).
What is 10 joules in foot-pounds (energy)?
10 joules equals 7.37562 foot-pounds (energy).
What is 100 joules in foot-pounds (energy)?
100 joules equals 73.7562 foot-pounds (energy).
How do I convert back from foot-pounds (energy) to joules?
Multiply the foot-pound (energy) value by 1.35582. For example, 1 ft·lbf = 1.35582 J.
Is the joule bigger than the foot-pound (energy)?
No. 1 joule is smaller than 1 foot-pound (energy). It takes 1.35582 joules to equal 1 foot-pound (energy).
Are these conversion factors exact?
The underlying imperial/US unit definitions are exact; the displayed factor (0.737562) is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.

About the joule and the foot-pound (energy)

The joule

The joule (J) is the SI derived unit of energy, work, and heat — defined as the energy transferred when a force of one newton acts over one meter. The joule is the standard unit in physics, chemistry, and most modern engineering documentation.

The foot-pound (energy)

The foot-pound (ft·lbf) is the customary US/imperial unit of energy and work, equal to exactly 1.3558179483314004 joules — the work done by one pound-force acting through one foot. It is common in US mechanical and ballistics contexts, where it is distinct from the pound-foot unit of torque despite sharing the same underlying units.

Related converters

Foot-pounds (energy) to Joules
ft·lbf → J
Kilojoules to Kilocalories
kJ → kcal
Kilojoules to Watt-hours
kJ → Wh
Kilojoules to Kilowatt-hours
kJ → kWh
Calories to Joules
cal → J
Calories to Kilojoules
cal → kJ

Sources