The Weight / Mass Converter switches any mass value between metric and imperial units. Type a number, choose your units, and get an accurate result alongside a table showing the same mass in every supported unit.
Metric and imperial mass units
This converter covers tonnes, kilograms, grams, milligrams and micrograms for metric work, plus pounds, ounces, stones and US short tons for imperial measurements. It also includes the carat, used for gemstones and pearls.
Conversions use the international avoirdupois pound (1 lb = 453.59237 g) so results match scientific and commercial standards exactly.
Popular weight conversions
- Kilograms to pounds and pounds to kilograms
- Grams to ounces and ounces to grams
- Stones to kilograms for body weight
- Tonnes and US tons for bulk material
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