Pound-Inches to Pound-Feet Converter
Enter a value below to convert pound-inches to pound-feet - twelve pound-inches make one pound-foot. For the reverse, use our pound-feet to pound-inches converter.
1 lbf·in = 0.0833333 lbf·ft. Convert pound-force inches to pound-force feet. Need the reverse? See lbf·ft to lbf·in.
Pound-force inch
- Definition
- A pound-force inch (symbol: lbf·in), often written lb-in or in-lb, is a unit of torque equal to one pound-force applied on a one-inch lever arm. There are exactly 12 pound-inches in one pound-foot.
- History / origin
- Like the pound-foot it derives from the pound-force and the inch, one twelfth of a foot. It is the small-scale companion to the pound-foot, suited to light fasteners where a pound-foot would be an awkwardly small fraction.
- Current use
- Pound-inches are widely used for low-torque assembly in the United States - electronics, instruments, small engines and bicycle parts - and are marked on inch-pound torque wrenches and torque screwdrivers.
Pound-force foot
- Definition
- A pound-force foot (symbol: lbf·ft), usually written lb-ft or ft-lb, is a unit of torque in the imperial and US customary systems. It is the torque from one pound-force acting on a one-foot lever arm, and equals 1.355818 newton meters.
- History / origin
- It is built from the pound-force - the weight of a one-pound mass at standard gravity - and the foot. For torque it is written pound-feet (lbf·ft), while the identical product used for energy is written foot-pounds; the word order signals which quantity is meant.
- Current use
- Pound-feet are the everyday torque unit in the United States, especially in automotive work, where wheel-nut, spark-plug and cylinder-head torques are routinely specified in lb-ft alongside or instead of newton meters.
Pound-force inch to pound-force foot conversion table
| Pound-force inch [lbf·in] | Pound-force foot [lbf·ft] |
|---|---|
| 1 lbf·in | 0.0833333333 lbf·ft |
| 2 lbf·in | 0.1666666667 lbf·ft |
| 3 lbf·in | 0.25 lbf·ft |
| 5 lbf·in | 0.4166666667 lbf·ft |
| 6 lbf·in | 0.5 lbf·ft |
| 10 lbf·in | 0.8333333333 lbf·ft |
| 12 lbf·in | 1 lbf·ft |
| 15 lbf·in | 1.25 lbf·ft |
| 20 lbf·in | 1.6666666667 lbf·ft |
| 24 lbf·in | 2 lbf·ft |
| 30 lbf·in | 2.5 lbf·ft |
| 36 lbf·in | 3 lbf·ft |
| 48 lbf·in | 4 lbf·ft |
| 50 lbf·in | 4.1666666667 lbf·ft |
| 100 lbf·in | 8.3333333333 lbf·ft |
| 120 lbf·in | 10 lbf·ft |
Popular pound-force inch to pound-force foot conversions
Everyday torque values, rounded to two decimals - the kind of figures you meet on real-world torque specifications.
| Pound-force inch [lbf·in] | Pound-force foot [lbf·ft] |
|---|---|
| 5 lbf·in | 0.42 lbf·ft |
| 10 lbf·in | 0.83 lbf·ft |
| 12 lbf·in | 1 lbf·ft |
| 15 lbf·in | 1.25 lbf·ft |
| 20 lbf·in | 1.67 lbf·ft |
| 24 lbf·in | 2 lbf·ft |
| 30 lbf·in | 2.50 lbf·ft |
| 36 lbf·in | 3 lbf·ft |
| 48 lbf·in | 4 lbf·ft |
| 60 lbf·in | 5 lbf·ft |
| 72 lbf·in | 6 lbf·ft |
| 100 lbf·in | 8.33 lbf·ft |
How to convert pound-force inches to pound-force feet
To convert pound-inches to pound-feet, divide the pound-inch value by 12. For example, 120 lbf·in = 120 ÷ 12 = 10 lbf·ft.
Twelve pound-inches make one pound-foot, so dividing by 12 (or multiplying by 0.0833333333) gives the result exactly:
lbf·ft = lbf·in ÷ 12 = lbf·in × 0.0833333333
1 lbf·in = 0.0833333333 lbf·ft · 1 lbf·ft = 12 lbf·in
Example. To convert 60 lbf·in to pound-feet, divide by 12: 60 lbf·in = 60 ÷ 12 = 5 lbf·ft. Going the other way, 5 lbf·ft is 5 × 12 = 60 lbf·in.
When you need to convert pound-force inches to pound-force feet
Pound-inch to pound-foot conversion turns small imperial torque figures into the larger unit. Common cases:
- Converting an in-lb screwdriver setting to pound-feet for comparison with a larger spec.
- Reading a small-fastener torque in pound-inches when the rest of the job is in pound-feet.
- Setting a pound-foot torque wrench from an inch-pound figure.
- Reconciling a spec sheet that lists some torques in lb-in and others in lb-ft.
- Checking the 12-to-1 ratio when moving between the two imperial torque units.
Frequently asked questions
How do I convert pound-inches to pound-feet?
Divide the pound-inch value by 12, because twelve pound-inches make one pound-foot. For example, 120 lbf·in equals 10 lbf·ft.
How many pound-feet is 1 pound-inch?
One pound-inch equals one twelfth of a pound-foot, about 0.0833 lbf·ft.
How many pound-feet is 100 in-lb?
100 lbf·in equals about 8.33 pound-feet.
How many pound-inches are in a pound-foot?
There are exactly 12 pound-inches in one pound-foot.
What is the formula to convert in-lb to ft-lb?
Divide the pound-inch value by 12 to get pound-feet.
How do I convert pound-feet back to pound-inches?
Multiply the pound-foot value by 12, or use our pound-feet to pound-inches converter.
Popular torque conversions
Jump to another torque conversion - each link opens a converter preset to that pair.
Convert pound-force inches to other torque units
Convert a pound-force inche measurement into any other torque unit our converter supports.