Weight Converter
Convert milligrams, grams, kilograms, tonnes, pounds, ounces, carats and Chinese jin/liang/qian/dan online. Precise multi-decimal results for cooking, shipping, precious metals and international trade.
Weight conversion
Weight Convert
All units overview
All Units Overview
Weight Converter Guide
Metric / Chinese / Imperial
The weight (mass) converter covers 11 common units across the metric, imperial and Chinese traditional systems, suitable for cooking and baking, shipping and logistics, precious-metal trading, jewelry, international trade and everyday shopping. Metric is based on the kilogram, imperial is represented by the pound and ounce, and Chinese units include jin, liang, qian and dan. Enter any value to instantly convert all units — no need to toggle between dropdowns — which is especially useful for recipes, cross-border shopping and reading international materials.
Weight converter guide
Weight (mass) conversion comes up constantly in cooking, shipping, precious metals and international trade. This tool covers 11 units across metric, imperial and Chinese systems; enter any weight and see every unit at once.
Metric: grams, kilograms, tonnes
Metric is based on the kilogram: 1 tonne = 1000 kg, 1 g = 0.001 kg, 1 mg = 0.000001 kg — the global standard for science and commerce.
Imperial: pounds, ounces, carats
1 pound (lb) = 0.45359237 kg (exact international value), 1 ounce (oz) ≈ 28.35 g, and 1 carat (ct) = 0.2 g, used for gemstones.
Chinese: jin, liang, qian, dan
In mainland China 1 jin = 500 g = 10 liang, 1 liang = 50 g = 10 qian, 1 dan = 50 kg, widely used in daily shopping and agricultural trade.
FAQ
QHow many kg in a pound?
1 lb = 0.45359237 kg by the exact international pound definition.
QIs the Chinese jin the same as in Hong Kong?
No. Mainland 1 jin = 500 g; the Hong Kong/Taiwan stone catty is about 605 g. This tool uses the mainland standard.
QHow many grams in an ounce?
1 avoirdupois ounce ≈ 28.35 g; a troy ounce (precious metals) ≈ 31.10 g. This tool uses the avoirdupois ounce.
QWhat is a carat?
The carat (ct) is used for gemstones and pearls; 1 ct = 0.2 g = 200 mg.
QHow many jin in a tonne?
1 metric tonne = 1000 kg = 2000 jin.