Pounds to KG converter

How to convert pounds to kilograms

To convert pounds to kilograms, use kg = lb × 0.453592. For example, 100 lb is 45.3592 kg. Type any value in the converter above and the result updates instantly.

The Pounds to KG formula

The conversion is kg = lb × 0.453592. One pound equals 0.453592 kg. This conversion is exact: pound is defined precisely in terms of kilogram, so the only rounding is in the digits shown.

Pounds to KG conversion table

Where pounds and kilograms are used

Pounds are the everyday unit of weight in the United States and are also used in the United Kingdom for body weight, fitness and shipping.

Kilograms are the base unit of mass in the metric system: body weight, groceries, luggage and parcels.

Worked examples

These examples use the formula above, so you can check the converter or do the same by hand:

• 2 lb = 0.907185 kg
• 10 lb = 4.53592 kg
• 50 lb = 22.6796 kg

Converting pounds to kilograms in your head

Halve it and subtract 10 percent: 150 lb is 75 − 7.5 = 67.5 kg (exactly 68.0 kg).

KG to Pounds reference table

For the opposite direction, these values are handy to have at hand:

Common mistakes to avoid

• Pounds and kilograms measure mass, but on labels both are treated as weight; the conversion is the same.
• The ounce here is the avoirdupois ounce (28.35 g). Troy ounces used for gold and silver weigh about 31.1 g.

About this converter

The converter accepts whole numbers, decimals and negative values, gives the result as you type, and uses full precision internally, so what you copy is as accurate as it can be. It runs in your browser: nothing you type is sent to a server, it keeps working offline once the page has loaded, and there is nothing to install.

Need the opposite direction? Use the KG to Pounds converter.