lbf·ft to N·m
Convert lbf·ft to N·m. Enter a value and view the calculation method, examples and conversion table.
Torque converter
lbf·ft to N·m formula
The calculator converts the input to the category's reference unit, then divides by the target unit's factor.
Result = input × source factor ÷ target factor
1 × (1.35581794833 ÷ 1) ≈ 1.35581795
Worked example: 1 Pound-force feet ≈ 1.35581795 Newton metres
Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
lbf·ft to N·m conversion table
| Pound-force feet | Newton metres |
|---|---|
| 1 Pound-force feet | ≈ 1.35581795 Newton metres |
| 2 Pound-force feet | ≈ 2.7116359 Newton metres |
| 5 Pound-force feet | ≈ 6.77908974 Newton metres |
| 10 Pound-force feet | ≈ 13.55817948 Newton metres |
| 20 Pound-force feet | ≈ 27.11635897 Newton metres |
| 50 Pound-force feet | ≈ 67.79089742 Newton metres |
| 100 Pound-force feet | ≈ 135.58179483 Newton metres |
| 250 Pound-force feet | ≈ 338.95448708 Newton metres |
| 500 Pound-force feet | ≈ 677.90897417 Newton metres |
| 1,000 Pound-force feet | ≈ 1,355.81794833 Newton metres |
Definitions and assumptions
Torque factors are expressed relative to newton metres. Pound-force and kilogram-force terms use their conventional force definitions. Torque is a rotational moment, not a substitute label for energy.
How to use this calculator
- Enter the value you want to convert.
- Choose the source and target units, then adjust the display precision if needed.
- Read the result. Select Convert to open a page for this value, or use the table below.
Frequently asked questions
how many N·m is 1 lbf·ft?
1 Pound-force feet ≈ 1.35581795 Newton metres. Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
how to convert lbf·ft to N·m?
The calculator converts the input to the category's reference unit, then divides by the target unit's factor. 1 × 1.35581794833 ≈ 1.35581795 Newton metres. Use the source and target factors shown in the formula. The worked example uses the value on this page, and the table provides other common values.
Is a newton metre always the same as a joule?
They have the same dimensions, but describe different quantities. This tool converts torque units; interpreting mechanical work also requires the rotation angle.
Why is the displayed result rounded?
Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
What input range can I use?
This calculator accepts non-negative values up to 1 trillion, with up to 8 decimal places. It does not calculate signed vectors or calendar date intervals.
Why is a unit unavailable?
A conversion is unavailable when a verified unit definition or a current exchange-rate value has not been configured. The tool does not invent a coefficient.
Sources and methodology
Methods and sources · Content revised
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