Force / lbf → kgf
Convert Pounds-force to Kilograms-force
Convert forces between newtons, dynes, pound-force, and kilogram-force. Convert Pounds-force (lbf) to Kilograms-force (kgf). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Kilograms-force to Pounds-force →
How to convert pounds-force to kilograms-force
Kilogram-force and pound-force use standard gravity 9.80665 m/s². A kilogram or pound of mass is a different quantity; local weight depends on local gravity.
Use x for the value in lbf, b for the intermediate value in N, and y for the result in kgf.
kgf = lbf × 4.4482216152605 ÷ 9.80665
Worked examples
10 lbf ≈ 4.5359237 kgf
Step 1: (10 × 4.44822161526) ≈ 44.4822161526 N.
Step 2: 44.4822161526 ÷ 9.80665 ≈ 4.5359237 kgf.20 lbf ≈ 9.0718474 kgf
Step 1: (20 × 4.44822161526) ≈ 88.9644323052 N.
Step 2: 88.9644323052 ÷ 9.80665 ≈ 9.0718474 kgf.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Pounds-force
Pounds-force (lbf) measures force under the conventions above. The base value in N is (x × 4.44822161526), where x is the numerical value in lbf. Factors shown here are rounded for display; calculations use the stored factor.
About Kilograms-force
Kilograms-force (kgf) measures force under the conventions above. The base value in N is (x × 9.80665), where x is the numerical value in kgf. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Pounds-force to kilograms-force reference table
| Pounds-force (lbf) | Kilograms-force (kgf) |
|---|---|
| 1 | 0.45359237 |
| 5 | 2.26796185 |
| 10 | 4.5359237 |
| 25 | 11.33980925 |
| 50 | 22.6796185 |
| 100 | 45.359237 |
| 1000 | 453.59237 |
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