Pounds-force per foot to newtons per meter
Type a value in lbf/ft to get it in N/m instantly.
145.9N/m
That's 1.46× as stiff as a pen spring, while a trampoline spring is 14× stiffer. A 10 kg weight would squash it about 672 mm.
What it means
How much does it give?
Real springs only follow this straight line within their working range. Past that they bind or take a permanent set.
The math
How to convert lbf/ft to N/m
To convert pounds-force per foot to newtons per meter, multiply by 14.5939.
Example: 10 lbf/ft × 14.5939 = 145.939 N/m.
In the other direction, 1 N/m = 0.0685218 lbf/ft.
Every unit
Your spring rate in every unit
Tables
lbf/ft to N/m conversion table
| lbf/ft | N/m |
|---|---|
| 0.5 lbf/ft | 7.29695 N/m |
| 1 lbf/ft | 14.5939 N/m |
| 2 lbf/ft | 29.1878 N/m |
| 5 lbf/ft | 72.9695 N/m |
| 10 lbf/ft | 145.939 N/m |
| 20 lbf/ft | 291.878 N/m |
| 30 lbf/ft | 437.817 N/m |
| 50 lbf/ft | 729.695 N/m |
| 75 lbf/ft | 1,094.54 N/m |
| 100 lbf/ft | 1,459.39 N/m |
| 200 lbf/ft | 2,918.78 N/m |
N/m to lbf/ft conversion table
| N/m | lbf/ft |
|---|---|
| 0.5 N/m | 0.0342609 lbf/ft |
| 1 N/m | 0.0685218 lbf/ft |
| 2 N/m | 0.137044 lbf/ft |
| 5 N/m | 0.342609 lbf/ft |
| 10 N/m | 0.685218 lbf/ft |
| 20 N/m | 1.37044 lbf/ft |
| 30 N/m | 2.05565 lbf/ft |
| 50 N/m | 3.42609 lbf/ft |
| 75 N/m | 5.13913 lbf/ft |
| 100 N/m | 6.85218 lbf/ft |
| 200 N/m | 13.7044 lbf/ft |
Quick answers
Quick answers
- How many N/m is 1 lbf/ft?
- 1 lbf/ft is 14.5939 N/m.
- How many N/m is 10 lbf/ft?
- 10 lbf/ft is 145.939 N/m.
The units
About these units
Pounds-force per foot (lbf/ft)
A twelfth of lbf/in, occasionally used for long, soft springs.
Newtons per meter (N/m)
The SI unit: force per meter of stretch. Small for real springs, so N/mm is usual.
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