Pounds-force to newtons
Type a value in pounds-force to see it in newtons straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the pounds-force box.
- Read the result in newtons as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
N = lbf × 4.448221615
Multiply the value in pounds-force by 4.448221615 to get newtons.
Example
To convert 25 lbf to newtons: 25 × 4.448221615 = 111.206 N.
Conversion table
| Pounds-force (lbf) | Newtons (N) |
|---|---|
| 1 | 4.44822 |
| 2 | 8.89644 |
| 3 | 13.3447 |
| 5 | 22.2411 |
| 10 | 44.4822 |
| 20 | 88.9644 |
| 25 | 111.206 |
| 50 | 222.411 |
| 100 | 444.822 |
| 250 | 1,112.06 |
| 500 | 2,224.11 |
| 1,000 | 4,448.22 |
About the units
- Pound-force
- The weight of one pound (0.45359237 kg) under standard gravity, exactly 4.4482216152605 newtons.
- Newton
- The SI unit of force: the force that gives a mass of one kilogram an acceleration of one meter per second squared (1 N = 1 kg·m/s²).
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many newtons are in one pound-force?
1 lbf = 4.44822 N exactly.
How do I convert pounds-force to newtons?
Use N = lbf × 4.448221615. For example, 25 lbf = 111.206 N.
How many pounds-force are in one newton?
1 N = 0.224809 lbf.
What is the difference between a kilogram and a kilogram-force?
The kilogram is a unit of mass, while the kilogram-force is the weight of that mass under standard gravity, exactly 9.80665 newtons. So a 10 kg object presses down with about 98.07 newtons.
Why are climbing ropes and anchors rated in kilonewtons?
The kilonewton is a standard force unit that suits large loads. As a quick estimate, 1 kN is about 102 kilograms-force.