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.