Torque converter
Torque specs for bolts and engines. Pound-force is defined from the exact pound and standard gravity, so lbf·ft = 1.355 817 948 … N·m.
1 pound-force foot = 1.3558 newton metres
How it’s calculated
N·m = lbf·ft × 1.355817948
- Multiply the value in pound-force feet by 1.355817948.
- To go back, divide by 1.355817948 (or multiply by 0.7375621493).
- 1 lbf·ft = 1.355817948 N·m · 1 N·m = 0.7375621493 lbf·ft
Show worked solutionFactor, unit cancellation and rounding, step by step
Find the conversion factor
By definition 1 lbf·ft = 1.3558179483314 N·m. Source: NIST SP 811 / Handbook 44; BIPM SI Brochure (9th ed.) (SI prefixes and accepted units).
Multiply by the factor written as a fraction
Put lbf·ft in the denominator so it cancels, leaving N·m.
Calculate (unrounded)
Round the answer
Rounded to 5 significant figures.
Answer: 1.3558 N·m
1 lbf·ft in other units
Batch convert lbf·ft → N·m
- 1 lbf·ft = 1.3558 N·m
- 5 lbf·ft = 6.7791 N·m
- 10 lbf·ft = 13.558 N·m
- 25 lbf·ft = 33.895 N·m
Common torque conversions
Torque units and exact definitions
| Unit | System | Definition |
|---|---|---|
| Newton metre (N·m) | SI (metric) | Base unit |
| Kilonewton metre (kN·m) | SI (metric) | 1 kN·m = 1000 N·m |
| Pound-force foot (lbf·ft) | US & imperial (identical) | 1 lbf·ft = 1.355817948 N·m |
| Pound-force inch (lbf·in) | US & imperial (identical) | 1 lbf·in = 0.112984829 N·m |
| Kilogram-force metre (kgf·m) | other | 1 kgf·m = 9.80665 N·m |
| Ounce-force inch (ozf·in) | US & imperial (identical) | 1 ozf·in = 0.007061551814 N·m |
Pound-force feet to newton metres conversion table
| Pound-force feet (lbf·ft) | Newton metres (N·m) |
|---|---|
| 0.1 lbf·ft | 0.13558 N·m |
| 0.5 lbf·ft | 0.67791 N·m |
| 1 lbf·ft | 1.3558 N·m |
| 2 lbf·ft | 2.7116 N·m |
| 3 lbf·ft | 4.0675 N·m |
| 4 lbf·ft | 5.4233 N·m |
| 5 lbf·ft | 6.7791 N·m |
| 6 lbf·ft | 8.1349 N·m |
| 7 lbf·ft | 9.4907 N·m |
| 8 lbf·ft | 10.847 N·m |
| 9 lbf·ft | 12.202 N·m |
| 10 lbf·ft | 13.558 N·m |
| 15 lbf·ft | 20.337 N·m |
| 20 lbf·ft | 27.116 N·m |
| 25 lbf·ft | 33.895 N·m |
| 30 lbf·ft | 40.675 N·m |
| 40 lbf·ft | 54.233 N·m |
| 50 lbf·ft | 67.791 N·m |
| 75 lbf·ft | 101.69 N·m |
| 100 lbf·ft | 135.58 N·m |
| 250 lbf·ft | 338.95 N·m |
| 500 lbf·ft | 677.91 N·m |
| 1,000 lbf·ft | 1,355.8 N·m |
Frequently asked questions
Which torque units can I convert?
newton metres (N·m), kilonewton metres (kN·m), pound-force feet (lbf·ft), pound-force inches (lbf·in), kilogram-force metres (kgf·m), ounce-force inches (ozf·in).
How accurate are the results?
Every unit is stored with its exact defining factor (NIST SP 811, NIST Handbook 44 or the BIPM SI Brochure). Calculations use double-precision arithmetic and are rounded only for display, to 5 significant figures by default (trailing zeros dropped, so 1 km shows as 1000 m). You can choose Auto (up to 10 digits), fixed decimals or more significant figures, or switch to scientific or engineering notation.
Are N·m of torque and joules the same?
They have the same SI dimensions (kg·m²/s²) but describe different things: torque is a turning moment and energy is work done. Unitglide keeps them in separate categories so you never mix them by accident.