lbf·ft to kN·m Converter
Quick answer: To convert lbf·ft to kN·m, multiply by 0.001355818. For example, 10 lbf·ft is 0.01355818 kN·m. One pound-force foot equals 0.001355818 kN·m.
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Use the lbf·ft to kN·m Converter
lbf·ft to kN·m formula and what each symbol means
kN·m = lbf·ft × 0.001355818
| Symbol | Meaning |
|---|---|
| lbf·ft | Pound-force foot |
| kN·m | Kilonewton meter |
lbf·ft to kN·m examples
1 lbf·ft
1 lbf·ft × 0.001355818 = 0.001355818 kN·m.
10 lbf·ft
10 lbf·ft × 0.001355818 = 0.01355818 kN·m.
100 lbf·ft
100 lbf·ft × 0.001355818 = 0.1355818 kN·m.
lbf·ft compared with kN·m
One kN·m is 737.6 times as large as one lbf·ft, so your number gets smaller when you convert lbf·ft to kN·m and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About lbf·ft and kN·m
Pound-force foot (lbf·ft): Torque from one pound-force at one foot, about 1.35582 N·m. Kilonewton meter (kN·m): 1,000 newton metres.
Where lbf·ft to kN·m conversions are used
Bolt tightening specs are given in N·m, lbf·ft or lbf·in. Electric motors and gearboxes list rated and peak torque.
How to calculate lbf·ft to kN·m step by step
- Enter the value in lbf·ft (the starting unit).
- Multiply by 0.001355818, because 1 lbf·ft = 0.001355818 kN·m.
- The product is the value in kN·m. To go back, divide by 0.001355818 or multiply by 737.5621.
Popular torque conversions
How to read your lbf·ft to kN·m result
Quick estimate: multiply by about 0.00136 to get kN·m from lbf·ft; this is within 0.4% of the exact factor. One newton metre is the torque from 1 N acting 1 m from the axis.
| LBF·FT | KN·M |
|---|---|
| 1 | 0.001355818 |
| 2 | 0.002711636 |
| 5 | 0.00677909 |
| 10 | 0.01355818 |
| 20 | 0.02711636 |
| 50 | 0.0677909 |
| 100 | 0.1355818 |
| 1,000 | 1.355818 |
kN·m to lbf·ft: quick table
| KN·M | LBF·FT |
|---|---|
| 1 | 737.5621 |
| 5 | 3,687.811 |
| 10 | 7,375.621 |
| 25 | 18,439.05 |
| 50 | 36,878.11 |
| 100 | 73,756.21 |
| 250 | 184,390.5 |
| 500 | 368,781.1 |
Common mistakes when calculating lbf·ft to kN·m
- Mixing lbf·in and lbf·ft: a factor of 12.
- Dividing when you should multiply: from lbf·ft to kN·m multiply by 0.001355818; from kN·m to lbf·ft divide by 0.001355818.
lbf·ft to kN·m FAQ
How many kN·m are in 1 lbf·ft?
1 lbf·ft equals 0.001355818 kN·m.
How many lbf·ft are in 1 kN·m?
1 kN·m equals 737.5621 lbf·ft.
Is 1 lbf·ft = 0.001355818 kN·m an exact conversion?
The factor is shown rounded to 7 significant figures (0.001355818). The calculator above uses more digits.
What is a kilonewton meter (kN·m)?
1,000 newton metres.
How can I estimate lbf·ft to kN·m in my head?
Quick estimate: multiply by about 0.00136 to get kN·m from lbf·ft; this is within 0.4% of the exact factor.
What is 40 lbf·ft in kN·m?
40 lbf·ft = 0.05423272 kN·m (since 40 × 0.001355818).
What is 200 lbf·ft in kN·m?
200 lbf·ft = 0.2711636 kN·m (since 200 × 0.001355818).
What is 3 lbf·ft in kN·m?
3 lbf·ft = 0.004067454 kN·m (since 3 × 0.001355818).
How many decimals should I keep when converting lbf·ft to kN·m?
Match the precision of your original measurement. For example, 0.01355818 kN·m rounds to 0.0136 kN·m at 3 significant figures; keep more digits only for engineering or scientific work.
More in Torque converters
- lbf·ft to N·m Converter
- kN·m to N·cm Converter
- lbf·in to kgf·m Converter
- kN·m to lbf·in Converter
- lbf·in to kN·m Converter
- lbf·in to lbf·ft Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors