Pound to Kilogram

Convert pound to kilogram instantly. Type in either field — results update live.

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Weight & Mass Pound Kilogram

1 pound = 0.45359237 kilograms

From

Format

Selected lb values converted to kg using the exact factor from this tool.

Exact conversion factors in both directions, plus a worked example.

1 lb = 0.45359237 kg

1 kg = 2.2046226218 lb

To convert pound to kilogram, multiply by 0.45359237.

To convert kilogram to pound, multiply by 2.2046226218.

Example: convert 10 lb to kg

10 × 0.45359237 = 4.5359237 kg

Short background on the units used in this conversion.

The international avoirdupois pound is exactly 0.45359237 kilograms by international agreement.

Pounds are used for body weight, groceries, and shipping in the United States and several other countries.

The kilogram is the SI base unit of mass, defined by fixing the numerical value of the Planck constant.

Kilograms are used worldwide for body weight, food packaging, shipping labels, and science wherever the metric system is standard.

How many kilograms are in one pound?

One pound equals 0.45359237 kilograms. Multiply your pounds value by 0.45359237 to convert to kilograms.

What is the conversion formula?

kg = lb × 0.45359237

The reverse is lb = kg × 2.2046226218, using the same exact factors as this converter.

Is this Pound to Kilogram converter private?

Yes. All calculations run locally in your browser. Nothing you type is sent to a server.

Jump to any weight & mass conversion starting from pound — including the reverse direction and every other unit in our dataset.