1 lb-ft = 12 lb-in (pound-foot → pound-inch)
1 lb-ft = 12 lb-in
1 pound-foot equals 12 pound-inches. To convert pound-feet to pound-inches, multiply the pound-foot value by 12. For quick reference: 1 lb-ft = 12 lb-in, 5 lb-ft = 60 lb-in, 10 lb-ft = 120 lb-in, 100 lb-ft = 1200 lb-in.
Pound-inches = Pound-feet × 12Pound-feet to pound-inches multiplies by 12 — 1 lbf·ft = 12 lbf·in by definition. A 15 lbf·ft spec is 180 lbf·in. Light fasteners (electronics, optics, small engines) are specified in pound-inches because pound-feet would give awkward fractions below one; heavier work uses pound-feet. Mixing the two is a classic and costly error — applying a pound-foot number on a pound-inch scale over-torques by 12×, shearing small screws.
Start with your value in pound-feet.
Multiply the pound-foot value by 12. This is the exact conversion factor from pound-feet to pound-inches.
The product is your value in pound-inches. For example, 5 lb-ft × 12 = 60 lb-in.
The exact factor from pound-feet to pound-inches is 12.
Pound-inches = Pound-feet × 12
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Pound-feet (lb-ft) | Pound-inches (lb-in) |
|---|---|
| 0.1 lb-ft | 1.2 lb-in |
| 0.5 lb-ft | 6 lb-in |
| 1 lb-ft | 12 lb-in |
| 2 lb-ft | 24 lb-in |
| 5 lb-ft | 60 lb-in |
| 8 lb-ft | 96 lb-in |
| 10 lb-ft | 120 lb-in |
| 15 lb-ft | 180 lb-in |
| 20 lb-ft | 240 lb-in |
| 25 lb-ft | 300 lb-in |
| 30 lb-ft | 360 lb-in |
| 40 lb-ft | 480 lb-in |
| 50 lb-ft | 600 lb-in |
| 60 lb-ft | 720 lb-in |
| 75 lb-ft | 900 lb-in |
| 90 lb-ft | 1080 lb-in |
| 100 lb-ft | 1200 lb-in |
| 125 lb-ft | 1500 lb-in |
| 150 lb-ft | 1800 lb-in |
| 175 lb-ft | 2100 lb-in |
| 200 lb-ft | 2400 lb-in |
| 225 lb-ft | 2700 lb-in |
| 250 lb-ft | 3000 lb-in |
| 300 lb-ft | 3600 lb-in |
| 350 lb-ft | 4200 lb-in |
| 400 lb-ft | 4800 lb-in |
| 450 lb-ft | 5400 lb-in |
| 500 lb-ft | 6000 lb-in |
| 600 lb-ft | 7200 lb-in |
| 700 lb-ft | 8400 lb-in |
| 800 lb-ft | 9600 lb-in |
| 900 lb-ft | 10800 lb-in |
| 1000 lb-ft | 12000 lb-in |
| 1200 lb-ft | 14400 lb-in |
| 1500 lb-ft | 18000 lb-in |
| 1800 lb-ft | 21600 lb-in |
| 2000 lb-ft | 24000 lb-in |
| 2500 lb-ft | 30000 lb-in |
| 3000 lb-ft | 36000 lb-in |
| 5000 lb-ft | 60000 lb-in |
| 7500 lb-ft | 90000 lb-in |
| 10000 lb-ft | 120000 lb-in |
| 15000 lb-ft | 180000 lb-in |
| 20000 lb-ft | 240000 lb-in |
| 25000 lb-ft | 300000 lb-in |
| 50000 lb-ft | 600000 lb-in |
| 75000 lb-ft | 900000 lb-in |
| 100000 lb-ft | 1200000 lb-in |
| 200000 lb-ft | 2400000 lb-in |
| 500000 lb-ft | 6000000 lb-in |
The pound-foot (lb-ft) is the customary torque unit in the United States. It equals exactly 1.355817948 N·m — derived from the pound-force (4.4482216152605 N) times the foot (0.3048 m). Often informally written 'ft-lb' or 'foot-pound', which technically denotes energy not torque, but the convention is universal in automotive spec sheets.
The pound-inch equals 1/12 of a pound-foot, or about 0.113 N·m. Used for fine-fastener torque specs (small bolts, screws) where pound-feet would produce inconveniently small numbers.