Convert Pound-feet to Pound-inches
1 pound-foot is 12 lbf·in. One pound-foot is exactly 12 pound-inches.
One pound-foot is 12 pound-inches. To convert pound-feet to pound-inches, multiply by 12; to go the other way, divide by 12 or multiply by 0.083333333. The factor is exact rather than rounded: it follows from NIST Special Publication 811. The torque of one pound-force at one foot.
Factor checked against the defining standard · How we check
- Pound-feet × 12
1 * 1212 lbf·in
1 pound-foot in every torque unit
| Unit | Value | Exact factor |
|---|---|---|
| pound-feet (as entered) | 1 lbf·ft | — |
| pound-inches | 12 lbf·in | × 12 |
| newton meters | 1.355817948 N·m | × 1.35581794833 |
| newton centimeters | 135.5817948 N·cm | × 135.581794833 |
| kilogram-force meters | 0.1382549544 kgf·m | × 0.138254954376 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert pound-feet to pound-inches? The converter and the working
- 1.Take the measurement in pound-feet.
- 2.Multiply by 12 — that is how many pound-inches fit in one pound-foot.
- 3.To go back the other way, divide by 12, or multiply by 0.083333333.
Worked example: 25 pound-feet to pound-inches
- Formula
- lbf·ft × 12 = lbf·in
- Arithmetic
- 25 × 12 = 300 lbf·in
- Answer
- 25 lbf·ft = 300 lbf·in
The factor is exact, so this figure is exact too — only the display is rounded.
Pound-feet to pound-inches conversion table
| Pound-feet | Pound-inches |
|---|---|
| 1 lbf·ft | 12 lbf·in |
| 2 lbf·ft | 24 lbf·in |
| 3 lbf·ft | 36 lbf·in |
| 4 lbf·ft | 48 lbf·in |
| 5 lbf·ft | 60 lbf·in |
| 6 lbf·ft | 72 lbf·in |
| 7 lbf·ft | 84 lbf·in |
| 8 lbf·ft | 96 lbf·in |
| 9 lbf·ft | 108 lbf·in |
| 10 lbf·ft | 120 lbf·in |
| 12 lbf·ft | 144 lbf·in |
| 15 lbf·ft | 180 lbf·in |
| 20 lbf·ft | 240 lbf·in |
| 25 lbf·ft | 300 lbf·in |
| 50 lbf·ft | 600 lbf·in |
| 100 lbf·ft | 1,200 lbf·in |
| 200 lbf·ft | 2,400 lbf·in |
| 300 lbf·ft | 3,600 lbf·in |
| 500 lbf·ft | 6,000 lbf·in |
| 1000 lbf·ft | 12,000 lbf·in |
| 2000 lbf·ft | 24,000 lbf·in |
| 5000 lbf·ft | 60,000 lbf·in |
| 10000 lbf·ft | 120,000 lbf·in |
What is a pound-foot?
The torque of one pound-force at one foot. Exact, because a pound-force is exactly 4.4482216152605 newtons and a foot is exactly 0.3048 meters. Every US torque wrench is marked in these.
What is a pound-inch?
One twelfth of a pound-foot. Small fasteners, spark plugs and bicycle components are specified here, which is why a spec of "80 in-lb" is not a misprinted 80 ft-lb.
How many pound-inches are in a pound-foot?
One pound-foot is 12 pound-inches, exactly. Going the other way, one pound-inch is 0.083333333 pound-feet. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every torque unit here
The whole group — 5 units with their symbols and the size of each one in newton meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a pound-foot.
Source: NIST Special Publication 811 — pound-force is exactly 4.4482216152605 N
Cite this page
- APA
- Rule Calculator. (2026). Convert Pound-feet to pound-inches. Rule Calculator. https://rulecalculators.com/convert/pound-foot-to-pound-inch
- MLA
- "Convert Pound-feet to pound-inches." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/pound-foot-to-pound-inch.
- Chicago
- Rule Calculator. "Convert Pound-feet to pound-inches." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/pound-foot-to-pound-inch.
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Questions people actually ask
- How many pound-inches are in a pound-foot?
- 12. One twelfth of a pound-foot. Small fasteners, spark plugs and bicycle components are specified here, which is why a spec of "80 in-lb" is not a misprinted 80 ft-lb.
- How do I convert pound-inches back to pound-feet?
- Divide by 12, or multiply by 0.083333333 — they are the same operation.
Other torque conversions
Pound-inches to pound-feet — the same conversion the other way.