Weight & Mass Converter
Convert between kilograms, pounds, stone, ounces, grams, tonnes, carats, troy ounces, and more. Enter any value and all units update in real time.
Convert weight / mass
Quick references
Full conversion table
Enter a weight above to see all conversions.
Body weight quick-reference
Common body weights in kg, stone & lbs, and pounds.
| kg | Stone & lbs | Pounds (lbs) | Note |
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Precious metals & troy weights
Troy weight is the standard for gold, silver, and gemstones — different from the everyday avoirdupois ounce.
Note: 1 troy ounce = 31.1035 g, but 1 avoirdupois ounce = 28.3495 g. Troy ounces are ~9.7% heavier. Always check which system is being used when buying or selling precious metals.
Real-world weight reference
From a grain of rice to the mass of the Earth.
Cooking weight guide
Common cooking measurements and ingredient weights.