Convert pound-force foot to joule
Please provide values below to convert pound-force foot [lbf*ft] to joule [J], or Convert joule to pound-force foot.
1 lbf*ft = 1.35581795 J. To convert pound-force foot to joule, multiply the value by 1.35581795; to go the other way, divide by it (1 J = 0.73756214837 lbf*ft). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 lbf*ft = 1.35581795 J
- 1 J = 0.73756214837 lbf*ft
- 10 lbf*ft = 13.5581795 J
- 100 lbf*ft = 135.581795 J
How to Convert Pound-Force Foot to Joule
1 lbf*ft = 1.35581795 J
Example: convert 15 lbf*ft to J:
15 lbf*ft = 15 × 1.35581795 J = 20.33726925 J
Pound-Force Foot to Joule Conversion Table
| pound-force foot | joule |
|---|---|
| 1 lbf*ft | 1.35581795 J |
| 2 lbf*ft | 2.7116359 J |
| 3 lbf*ft | 4.06745385 J |
| 5 lbf*ft | 6.77908975 J |
| 10 lbf*ft | 13.5581795 J |
| 20 lbf*ft | 27.116359 J |
| 50 lbf*ft | 67.7908975 J |
| 100 lbf*ft | 135.581795 J |
| 500 lbf*ft | 677.908975 J |
| 1000 lbf*ft | 1355.81795 J |
Pound-Force Foot
The pound-force foot (lbf·ft) is a unit of torque or moment of force, representing the force of one pound-force applied at a perpendicular distance of one foot from the pivot point.
History/Origin
The pound-force foot originated from the Imperial system of units, primarily used in the United States, to quantify torque in mechanical and engineering contexts before the widespread adoption of the SI system.
Current Use
Today, the pound-force foot is still used in certain engineering fields, particularly in the United States, to measure torque in automotive, mechanical, and structural applications, although the SI unit newton meter is more common internationally.
Joule
The joule (J) is the SI unit of energy, work, and heat, defined as the work done when a force of one newton acts over a distance of one meter.
History/Origin
The joule was named after James Prescott Joule in 1889 to honor his work in energy and thermodynamics. It was adopted as the SI unit of energy in 1948.
Current Use
The joule is widely used in physics, engineering, and everyday contexts to quantify energy, work, and heat in various applications, including electricity, mechanics, and thermodynamics.
Frequently Asked Questions
What is 1 pound-force foot in joule?
1 pound-force foot (lbf*ft) = 1.35581795 joule (J).
How do you convert pound-force foot to joule?
Multiply the pound-force foot value by 1.35581795. For example, 25 lbf*ft × 1.35581795 = 33.89544875 J.
What is 10 pound-force foot in joule?
10 lbf*ft = 13.5581795 J.
Which unit is larger, the pound-force foot or the joule?
The pound-force foot is the larger unit: 1 lbf*ft = 1.35581795 J.