Convert Pound-feet to Pound-inches
1 pound-foot (lbf·ft) equals 12 pound-inches (lbf·in).
1 lbf·ft = 12 lbf·in
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk pound-foot to pound-inch converter to paste a column from Excel.
How to Convert Pound-foot to Pound-inch
- 1 lbf·ft = 12 lbf·in
- 1 lbf·in = 0.08333333333 lbf·ft
- Example: convert 15 lbf·ft to lbf·in: 15 lbf·ft = 15 × 12 lbf·in = 180 lbf·in
Formula
lbf·in = lbf·ft × 12
Derivation from SI units:
- 1 lbf·ft = 4.4482216152605 N × 0.3048 m = 1.3558179483314 N·m
- 1 lbf·in = 4.4482216152605 N × 0.0254 m = 0.1129848290276 N·m
- 1 lbf·ft = 1.355817948331 N·m ÷ 0.1129848290276 N·m per lbf·in = 12 lbf·in
Both units are defined exactly, so the factor is exact. Pound-foot definition: pound-foot; Pound-inch definition: pound-inch.
Worked examples
- 10 lbf·ft is 120 lbf·in.
10 lbf·ft × 12 = 120 lbf·in - 25 lbf·ft is 300 lbf·in.
25 lbf·ft × 12 = 300 lbf·in
Pound-foot to Pound-inch conversion table
| Pound-feet (lbf·ft) | Pound-inches (lbf·in) |
|---|---|
| 1 lbf·ft | 12 lbf·in |
| 5 lbf·ft | 60 lbf·in |
| 10 lbf·ft | 120 lbf·in |
| 15 lbf·ft | 180 lbf·in |
| 20 lbf·ft | 240 lbf·in |
| 25 lbf·ft | 300 lbf·in |
| 30 lbf·ft | 360 lbf·in |
| 50 lbf·ft | 600 lbf·in |
| 75 lbf·ft | 900 lbf·in |
| 80 lbf·ft | 960 lbf·in |
| 100 lbf·ft | 1200 lbf·in |
| 150 lbf·ft | 1800 lbf·in |
| 200 lbf·ft | 2400 lbf·in |
| 250 lbf·ft | 3000 lbf·in |
| 300 lbf·ft | 3600 lbf·in |
| 400 lbf·ft | 4800 lbf·in |
| 500 lbf·ft | 6000 lbf·in |
| 1000 lbf·ft | 12000 lbf·in |
Where it's used
Torque wrench ranges switch between ft-lb and in-lb; multiply pound-feet by 12 to get pound-inches.
Pound-foot to other torque units
| Conversion | 1 lbf·ft equals |
|---|---|
| pound-foot to newton-meter | 1.355817948 N·m |
| pound-foot to kilonewton-meter | 0.001355817948 kN·m |
| pound-foot to newton-centimeter | 135.5817948 N·cm |
| pound-foot to pound-inch | 12 lbf·in |
| pound-foot to ounce-inch | 192 ozf·in |
| pound-foot to kilogram-force meter | 0.1382549544 kgf·m |
| pound-foot to kilogram-force centimeter | 13.82549544 kgf·cm |
| pound-foot to dyne-centimeter | 13558179.48 dyn·cm |
Frequently asked questions
How many in-lb is 1 ft-lb?
Exactly 12.
How many pound-inches are in 1 pound-foot?
1 lbf·ft = 12 lbf·in.
How do I convert pound-feet to pound-inches?
Multiply the value in lbf·ft by 12. For example, 15 lbf·ft × 12 = 180 lbf·in.
Is the lbf·ft to lbf·in conversion exact?
Yes. Both units are defined exactly, and 1 lbf·ft is exactly 12 lbf·in.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound-force foot (lbf·ft)".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound-force inch (lbf·in)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Pound-feet to Pound-inches. Retrieved October 17, 2026, from https://scientificconverters.com/torque/pound-feet-to-pound-inches/
IEEE
Scientific Converters, "Convert Pound-feet to Pound-inches," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/torque/pound-feet-to-pound-inches/