Kilograms to Pounds Converter (kg to lbs)
Convert kilograms to pounds (kg to lbs) or pounds to kilograms (lbs to kg) using the exact international avoirdupois pound definition.
How it works
Kilograms × 2.2046226218487757 = pounds. Pounds ÷ 2.2046226218487757 = kilograms.
Formula / calculation method
pounds = kilograms ÷ 0.45359237kilograms = pounds × 0.45359237
Worked examples
- 1 kg is approximately 2.20462262 lb.
- 10 kg is approximately 22.04622622 lb.
- For the reverse conversion, 220.462262 lb is approximately 100 kg.
Pounds to kilograms (lbs to kg)
This calculator handles the reverse lbs-to-kg conversion on the same canonical page. Choose Pounds in the Convert from selector or use Swap units, then multiply pounds by exactly 0.45359237.
- 1 lb = 0.45359237 kg exactly.
- 10 lb = 4.5359237 kg.
- 50 lb = 22.6796185 kg.
Continue: Check the international pound definition.
When this tool helps
Useful for shipping, gym weights, luggage limits, product specifications, body-weight references, and metric–imperial comparisons.
Related calculations: ounces to pounds, grams to ounces, and centimeters to inches.
Browse this topic: Weight & Mass Converters · Mass & Weight Standards Guide.
Quick reference: kg to lbs and lbs to kg conversion chart
The same exact international-pound definition supports both conversion directions.
| Input | Result |
|---|---|
| 1 kg | 2.20462 lb |
| 5 kg | 11.02311 lb |
| 10 kg | 22.04623 lb |
| 1 lb | 0.45359237 kg |
| 10 lb | 4.5359237 kg |
| 50 lb | 22.6796185 kg |
Accuracy and definitions
The international avoirdupois pound is exactly 0.45359237 kilograms. Solveberry derives the kilogram-to-pound factor from that definition.
Reference standards
Where a published measurement definition applies, Solveberry links to primary standards rather than relying only on secondary converter sites.
- NIST Guide to the SI — Appendix B.8 conversion factors
- BIPM SI Brochure — International System of Units
Methodology & verification
- Method
- Kilograms × 2.2046226218487757 = pounds. Pounds ÷ 2.2046226218487757 = kilograms.
- Verification
- The displayed formula is cross-checked against Solveberry regression cases before release. Calculator inputs and results stay in the browser.
- Last reviewed
- 2026-09-05
Results are calculated locally in your browser. Optional analytics do not include calculator input values or results.
Common questions
Which pound does this converter use?
It uses the international avoirdupois pound, the standard pound used for everyday weight in the US and many other contexts.
Does this convert kilograms-force?
No. This page converts mass units, kilograms and avoirdupois pounds, not units of force.
Can I convert lbs to kg on this page?
Yes. Choose pounds as the starting unit or use Swap units. This single canonical calculator handles both kg to lbs and lbs to kg.
Why can my result differ slightly from another converter?
Differences usually come from rounding or from selecting a different regional measurement standard. Solveberry shows the factor or standard used on the page.