Convert Kilogram to Pound
Conversion Formula
lb = kg × 2.20462To convert Kilogram to Pound, use the formula above. This is the standard conversion factor used worldwide.
Conversion Table
| Kilogram (kg) | Pound (lb) |
|---|---|
| 1 | 2.204620 |
| 10 | 22.046200 |
| 50 | 110.231000 |
| 100 | 220.462000 |
Why convert Kilogram to Pound
Body weight is the single most common reason people run this conversion: a scale, a doctor's chart, or a fitness app outside the US reports weight in kilograms, and translating it into pounds is how most Americans actually understand the number. Shipping and luggage weights follow the same pattern, since international carriers and airlines often list weight limits in kilograms even on routes departing from the US.
Where the number comes from
The pound has been defined as exactly 0.45359237 kilograms since the 1959 international yard and pound agreement, making this an exact conversion rather than an estimate. Multiply a kilogram figure by 2.20462, the reciprocal of 0.45359237, to get pounds, and the result carries no built-in rounding error beyond how many decimal places you keep.
Quick reference
| 1 kg | 2.2046 lb | |
| 1 lb | 0.4536 kg | exact ratio is 0.45359237 |
| 70 kg | 154.32 lb | a commonly cited adult weight |
| 1 stone | 6.3503 kg | 14 lb, still used for UK/Irish body weight |
| 20 kg | 44.09 lb | a common gym plate weight |
| 100 kg | 220.46 lb |
Common mistakes
- People confuse the pound with the stone, a unit still used for body weight in the UK and Ireland where 1 stone equals 14 pounds, so a UK weight given as '11 stone 4' is not 11.4 pounds but 158 pounds.
- Gym plates and protein labels also mix kilogram and pound figures inconsistently between US and international brands, and misreading a 20 kg plate as 20 lb understates its actual weight by more than double.
Frequently Asked Questions
How many pounds is a UK stone?
Exactly 14 lb, or about 6.35 kg. The stone survives specifically for describing UK and Irish body weight, not for general use elsewhere.
Why is the exact conversion factor 0.45359237 and not a rounder number?
That figure was set in 1959 to reconcile several slightly different national pound definitions into one internationally agreed value, chosen to stay as close as possible to the pound already in common use rather than land on a round metric fraction.
How do I convert a body weight reading from a European scale?
Multiply the kilogram figure by 2.20462, or for a quick estimate double the kilogram number and subtract about 10 percent.
Is a kilogram of gym weight the same as a kilogram of body weight?
Yes, the kilogram is the same unit regardless of what is being weighed. Only the reference points people use to sanity check the number, a gym plate versus a bathroom scale reading, differ.