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Foot-pound to Joule Converter

Convert Foot-pounds to Joules

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How to Convert Foot-pounds to Joules

To convert foot-pounds (ft-lb) to joules, multiply the number of foot-pounds by 1.35582. This is because 1 foot-pound is the energy transferred upon applying a force of one pound-force through a linear displacement of one foot.

Formula

Joules = Foot-pounds × 1.35582

or

J = ft-lb × 1.35582

Step-by-step process

  1. Take the measurement in foot-pounds
  2. Multiply that number by 1.35582
  3. The result is the equivalent energy in joules

Examples

  • 10 ft-lb = 10 × 1.35582 = 13.5582 J
  • 50 ft-lb = 50 × 1.35582 = 67.791 J
  • 100 ft-lb = 100 × 1.35582 = 135.582 J

Common Foot-pounds to Joules Conversions

Here is a table of common conversions for quick reference:

Foot-pounds (ft-lb) Joules (J) Foot-pounds (ft-lb) Joules (J)
1 1.3558 100 135.58
5 6.7791 250 338.95
10 13.558 500 677.91
25 33.895 1,000 1,355.82
50 67.791 5,000 6,779.1

Other conversions from foot-pounds

Foot-pounds can be converted to various other units of energy. Here are some common conversions:

Frequently Asked Questions

How many foot-pounds are in a joule?

There are approximately 0.737562 foot-pounds in one joule.