Kilograms to Pounds
An instant kilograms-to-pounds converter, with the formula and a reference table below.
| Kilograms | Pounds |
|---|---|
| 1 kg | 2.204623 lb |
| 2 kg | 4.409245 lb |
| 3 kg | 6.613868 lb |
| 5 kg | 11.023113 lb |
| 10 kg | 22.046226 lb |
| 25 kg | 55.115566 lb |
| 50 kg | 110.231131 lb |
| 100 kg | 220.462262 lb |
How to use
- Enter a value in the Kilograms field.
- The Pounds figure appears immediately — no button to press.
- Typing in the Pounds field converts back to Kilograms the same way.
- Use the reference table for the values that come up most often.
Kilograms to Pounds formula
To convert kilograms to pounds, multiply by 2.20462262.
lb = kg × 2.20462262
Why this factor: the kilogram and the pound are both defined against the kilogram, so dividing one definition by the other gives 2.20462262 directly. Both definitions are set out in full below.
To go the other way, divide by 2.20462262 — or use the Pounds to Kilograms converter, which is the same calculation reversed.
Worked example
Start with 25 kg. Multiply by 2.20462262 to get 55.115566 lb.
25 kg × 2.20462262 = 55.115566 lb
The converter above does this for any value you type, in either direction.
What is a kilogram?
The kilogram is the SI base unit of mass — the reference for every other mass unit.
Definition: Since 2019 the kilogram has been defined by fixing the Planck constant at exactly 6.62607015×10⁻³⁴ joule-seconds, retiring the physical platinum-iridium cylinder that defined it for 130 years.
Where it is used: Universal in science, trade and everyday weighing outside the United States.
What is a pound?
The pound is the primary unit of weight in the United States.
Definition: Exactly 0.45359237 kilogram since the 1959 International Yard and Pound Agreement — an exact definition, not a rounded one.
Where it is used: Body weight, grocery and produce pricing, shipping rates, and gym weights in the US.
Worth knowing: This is the avoirdupois pound. The troy pound used for precious metals is different (about 373 g).
Kilograms vs Pounds
The kilogram is an SI unit while the pound is an imperial unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many pounds are in a kilogram?
One kilogram equals 2.20462262 pounds.
What is the formula to convert kilograms to pounds?
Multiply the number of kilograms by 2.20462262. To reverse it, divide by 2.20462262 instead.
How do I convert pounds back to kilograms?
Divide by 2.20462262, which is the same as multiplying by 0.45359237.
How many pounds are in 10 kilograms?
10 kg works out to 22.046226 lb.
Is there anything to watch out for with pounds?
This is the avoirdupois pound. The troy pound used for precious metals is different (about 373 g).
How is the kilogram defined?
Since 2019 the kilogram has been defined by fixing the Planck constant at exactly 6.62607015×10⁻³⁴ joule-seconds, retiring the physical platinum-iridium cylinder that defined it for 130 years.