Weight Converter
Convert between mg, g, kg, tonnes, ounces, pounds, and stone instantly.
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About this weight converter
This tool converts between 7 common weight units. Pick any two units, enter a value, and the result updates instantly — every conversion happens with simple arithmetic directly in your browser, so there's no network request, no waiting, and it keeps working even if you lose your internet connection.
Units covered
- Milligram (mg) — one thousandth of a gram, used for dosing in medicine and very small chemical quantities.
- Gram (g) — the everyday unit for cooking ingredients and small object weights worldwide.
- Kilogram (kg) — the SI base unit of mass, used for body weight and general measurement across most of the world.
- Metric Ton (t) — equal to 1,000 kilograms, used for vehicle weights, shipping cargo, and industrial quantities.
- Ounce (oz) — commonly used in the US for food packaging and postal weights, equal to one sixteenth of a pound.
- Pound (lb) — the standard unit for body weight and everyday goods in the US, equal to 16 ounces.
- Stone (st) — equal to 14 pounds, still the everyday unit for body weight in the UK and Ireland.