Weight converter

Convert between kilograms, pounds, ounces and more

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How it works

To convert a weight, multiply it by the size of the first unit in kilograms, then divide by the size of the second. One pound is exactly 0.45359237 kilograms, and one ounce is one sixteenth of a pound. Type in either box to convert both ways.

result = value × kilograms in first unit ÷ kilograms in second unit

Pounds and kilograms have a fixed relationship, set by an international agreement in 1959. All the imperial units here are built from that exact value.

Worked example. To change 10 kilograms to pounds: 10 ÷ 0.45359237 ≈ 22.05 pounds.

Examples

From	To
1 Kilograms	≈ 2.2 Pounds
1 Pounds	≈ 0.45 Kilograms
1 Ounces	≈ 28.35 Grams
100 Grams	≈ 3.53 Ounces
1 Stone	≈ 6.35 Kilograms
1 Tonnes	≈ 2,204.62 Pounds

What this tool doesn’t cover

Ounces here are everyday ounces, not the troy ounces used for gold.
Results show up to two decimal places.

Questions

How many pounds are in a kilogram?

One kilogram is about 2.20462 pounds.

What is a stone?

A stone is exactly 14 pounds, or about 6.35 kilograms. It is mostly used for body weight in the UK and Ireland.

What is the difference between a tonne and a ton?

A tonne is 1,000 kg. A US ton is 2,000 pounds, and a UK ton is 2,240 pounds.

How do I convert kg to lbs?

Multiply kilograms by 2.20462. For example, 70 kg is about 154.3 pounds.

How many grams are in an ounce?

One ounce is about 28.35 grams. A troy ounce, used for gold and silver, is heavier, at about 31.1 grams.

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Sources: NIST Office of Weights and Measures (opens in a new tab), BIPM: SI units (opens in a new tab)