How to convert pounds force to kilograms force
To convert pounds force to kilograms force, multiply by 0.45359237. Force conversions are used in mechanics, engineering, load ratings and physics coursework.
Pound-force to Kilogram-force conversion table
| Pound-force (lbf) | Kilogram-force (kgf) |
|---|---|
| 0.1 lbf | 0.045359237 kgf |
| 0.5 lbf | 0.226796185 kgf |
| 1 lbf | 0.45359237 kgf |
| 2 lbf | 0.90718474 kgf |
| 3 lbf | 1.36077711 kgf |
| 4 lbf | 1.81436948 kgf |
| 5 lbf | 2.26796185 kgf |
| 10 lbf | 4.5359237 kgf |
| 20 lbf | 9.0718474 kgf |
| 25 lbf | 11.33980925 kgf |
| 50 lbf | 22.6796185 kgf |
| 100 lbf | 45.359237 kgf |
| 500 lbf | 226.796185 kgf |
| 1,000 lbf | 453.59237 kgf |
About the units
Pound-force (lbf)
A pound-force is the weight of one pound under standard gravity, about 4.448 N.
Kilogram-force (kgf)
A kilogram-force is the weight of 1 kg under standard gravity, exactly 9.80665 N.
How to use this converter
- Type the number of pounds force (lbf) in the input box.
- The result in kilograms force appears instantly — no button needed.
- See the same value in every other force unit just below.
- Use “Swap units” to convert kilograms force back to pounds force.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many kilograms force are in one pound-force?
One pound-force equals 0.45359237 kilograms force. 0.45359237 is the exact factor used by this converter.
How do I convert pounds force to kilograms force?
Multiply the value in pounds force by 0.45359237. To go the other way, multiply kilograms force by 2.20462262185.
What is 10 lbf in kgf?
10 lbf = 4.5359237 kgf. Also, 5 lbf = 2.26796185 kgf and 100 lbf = 45.359237 kgf.
What is the difference between a pound-force and a kilogram-force?
A pound-force is the weight of one pound under standard gravity, about 4.448 N. A kilogram-force is the weight of 1 kg under standard gravity, exactly 9.80665 N.
Is this tool free and private?
Yes — the Pound-force to Kilogram-force is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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