Source unit
Pound lb
Pound is a unit used to measure mass.
One pound equals 0.45359237 kilograms.
Pound to Kilogram Converter
Reverse conversion: Kilogram to PoundResult
Pound to Kilogram
Exact11 lb==0.453592370.45359237 kg
How to convert pounds to kilograms
Formula, method and accuracy
1 pound equals 0.45359237 kilograms.
Multiply the pound value by exactly 0.45359237. The unit definition introduces no approximation; round only the final kilogram value when required.
kg = lb × 0.45359237
1 lb × 0.45359237 = 0.45359237 kg
- Operation
- Multiply by factor
- Method
- Linear
- Accuracy
- Exact ratio
Conversion table
Practical and common reference values
| Pounds (lb) | Kilograms (kg) |
|---|---|
| ¼ (0.25) | 0.11339809250.1133980925 |
| ½ (0.5) | 0.2267961850.226796185 |
| 11 | 0.453592370.45359237 |
| 22 | 0.907184740.90718474 |
| 55 | 2.267961852.26796185 |
| 1010 | 4.53592374.5359237 |
| 2525 | 11.3398092511.33980925 |
| 5050 | 22.679618522.6796185 |
| 100100 | 45.35923745.359237 |
About Pounds and Kilograms
Avoirdupois pounds are customary mass units; kilograms are SI mass units. One international pound is exactly 0.45359237 kilogram.
Pound as the source, Kilogram as the result
Use this direction when a pound-based mass must be entered into a metric shipping record, product listing, health record, laboratory document, or equipment specification.
Result unit
Kilogram kg
Kilogram is a unit used to measure mass.
Kilogram is the base unit for mass conversions.
Where pound-to-kilogram conversion is useful
Pound-to-kilogram conversion supports imported package weights, luggage limits, fitness and health records, product specifications, food quantities, and metric reporting.
An exact finite kilogram factor
One international avoirdupois pound equals exactly 0.45359237 kilogram. The factor is a finite decimal, but the useful result precision still depends on the source measurement.
Confirm the pound system and quantity
This page uses the avoirdupois pound of mass. Troy pounds and pound-force represent different units or quantities; choose the explicitly named unit when the source is specialized.
How this conversion is verified
The international avoirdupois pound is defined as exactly 0.45359237 kilogram. The converter applies that value to every live and table calculation before display formatting.
Standards used for this conversion
For a quick estimate, divide pounds by about 2.2. Use exactly 0.45359237 for the defined conversion.
Pounds and kilograms in this converter represent mass. Converting a force measurement requires force units rather than a mass factor.
Frequently asked questions
6 answers for this conversion
- How do I convert pounds to kilograms?
- Multiply the pound value by exactly 0.45359237.
- How many kilograms are in one pound?
- One international avoirdupois pound equals exactly 0.45359237 kilogram.
- Does this page convert avoirdupois or troy pounds?
- It converts the common avoirdupois pound. Troy pound is a separate selectable mass unit used in specialized contexts.
- Can pounds be treated as force?
- Not on this page. The lb unit here is mass; pound-force is a force unit and belongs in the Force converter.
- How should fractional pounds be entered?
- Enter the source as a decimal pound value. If the source separates pounds and ounces, combine those units correctly before converting.
- How many decimal places should a kilogram result use?
- Use the precision supported by the original pound measurement and the receiving requirement. Do not add precision merely because the factor is exact.
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