LBS to KG: Pounds to Kilograms Formula & Table
The international avoirdupois pound is defined as exactly 0.45359237 kilograms. Multiply a mass in pounds by this value to express it in kilograms. Divide by the same value for the reverse conversion.
Worked example · Updated
Convert ten pounds
Multiply 10 × 0.45359237. The result is 4.5359237 kg. If you only need two decimal places, report 4.54 kg; keep the full value while performing further arithmetic.
The often-quoted 2.2 pounds per kilogram is a useful estimate, not the exact inverse. Using it repeatedly can accumulate avoidable rounding differences.
Mass is not force
This conversion is between mass units. It is not a conversion from pounds-force to newtons. Similarly, the ounce in the mass category is an avoirdupois ounce, not a fluid ounce or a troy ounce.
Use the mass converter
The link below sets the converter to 10 lb and kg. Press Convert to reveal your result. Try a different value or swap the units to reverse the direction.
Exact unit definitions do not make the original measurement exact. The precision of a scale and its calibration still limit the useful precision of a converted reading.
| Pounds | Kilograms |
|---|---|
| 1 | 0.45359237 |
| 5 | 2.26796185 |
| 10 | 4.5359237 |
| 100 | 45.359237 |
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