Metric, imperial, and scientific mass conversion

Weight Converter

Convert everyday body weight, shipping weight, jewellery mass, and industrial tonnage in one tool.

From value From unit

To value To unit

All weight and mass conversions use the gram base unit with standard international conversion factors.

Other popular conversions

Metric, imperial, and scientific mass conversion

All calculations are performed locally in your browser. No values are stored or uploaded.

Features

Convert small jewellery weights, personal weights, and large shipping loads.

Switch easily between kilograms, pounds, ounces, stones, and tonnes.

Useful for precious stones, metals, ammunition, and other specialist measurements.

The converted value updates instantly while you type.

Swap both units in one click to verify values in either direction.

No entered weight or mass value is saved on a server.

One kilogram equals approximately 2.20462262 pounds.

One avoirdupois ounce equals exactly 28.349523125 grams.

A metric tonne is 1,000 kg, while a US short ton is about 907.185 kg.

One stone equals exactly 6.35029318 kilograms.

A metric carat is a unit commonly used for gemstones and equals 0.2 grams.

No. The conversion runs locally and does not upload your values.