Kilograms to pounds, both ways.

How do I convert kg to pounds?

Multiply the kilogram value by 2.20462: pounds = kg × 2.20462. 1 kilogram is defined as exactly 2.20462... pounds (the pound itself is defined as exactly 0.45359237 kg).

How do I convert pounds to kg?

Divide the pound value by 2.20462, or equivalently multiply by 0.453592: kg = pounds × 0.453592. For example, 150 lb × 0.453592 ≈ 68.04 kg.

Why do the US and most of the world use different weight units?

The US (along with a few other countries) uses the pound as its everyday unit for body weight and many other measurements, while most of the rest of the world uses the metric kilogram — a legacy of the US never fully adopting the metric system for everyday use, even though pounds and kilograms are both legally defined relative to each other today.

Worked example: a 68 kg person weighs 68 × 2.20462 ≈ 149.9 lb. Need this alongside height, BMI, or other unit categories? Try the BMI Calculator or the full Unit Converter.