Pound-feet to Newton-metres Converter lbf·ft → N·m
1 pound-foot (lbf·ft) = 1.355817948 newton-metres (N·m). Type a value below — the conversion happens instantly, entirely on your device.
1 lbf·ft = 1.355817948 N·m
80 pound-feet = 108.46544 newton-metres
80 × 1.35582 = 108.46544
1 lbf·ft equals 1.35582 N·m, so multiplying by 1.35582 converts the value. The result describes the exact same quantity — only the measuring stick changes.
How to convert pound-feet to newton-metres
newton-metres = pound-feet × 1.355817948 — multiply the pound-foot value by 1.35582.
Example: 80 lbf·ft = 108.465 N·m.
To convert the other way: pound-feet = newton-metres ÷ 1.355817948 — or use the dedicated N·m to lbf·ft converter .
Pound-feet to newton-metres multiplies by about 1.3558: an 80 lbf·ft lug-nut spec is about 108 N·m. Use it when a US manual lists ft-lb but your torque wrench is set in N·m.
Pound-feet to Newton-metres conversion table
| Pound-feet (lbf·ft) | Newton-metres (N·m) |
|---|---|
| 5 | 6.7790897 |
| 10 | 13.558179 |
| 15 | 20.337269 |
| 20 | 27.116359 |
| 25 | 33.895449 |
| 50 | 67.790897 |
| 75 | 101.68635 |
| 80 | 108.46544 |
| 100 | 135.58179 |
| 150 | 203.37269 |
About the units
What is a pound-foot?
A pound-foot is the torque of one pound-force at one foot — the US car-spec unit (often written "ft-lb"). One lbf·ft is about 1.3558 N·m.
What is a newton-metre?
The SI unit of torque — one newton of force at one metre from the axis. Engine and fastener torque is specified in N·m across most of the world.
Frequently asked questions
How many newton-metres are in 1 pound-foot?
1 pound-foot (lbf·ft) = 1.355817948 newton-metres (N·m).
What is the formula to convert pound-feet to newton-metres?
newton-metres = pound-feet × 1.355817948 — multiply the pound-foot value by 1.35582.
How do I convert lbf·ft to N·m without a calculator?
Multiply by 1.36 for a close estimate. Exact factor: 1 lbf·ft = 1.355817948 N·m.
Is this lbf·ft-to-N·m converter accurate and private?
Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.