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Everything here runs in your browser
Nothing you weigh, measure or type is sent anywhere. There is no account, no email wall, and no buyer waiting at the end of any of it.
How much is my scrap gold worth?
Weigh it, pick the karat, and see the value of the metal at the live gold price — then what a buyer is likely to hand over, which is a different number.
How much is sterling silver worth per gram?
Sterling, coin, Britannia and fine silver at the live silver price — including why small silver items are often worth less than the trouble of selling them.
How much is a platinum ring worth?
PT950, PT900 and PD950 at live prices. Both metals are denser than gold, which is why the weight surprises people.
What is my ring size in UK, US or European sizes?
Convert between US, UK, European, Japanese and millimetre sizes — starting from the only measurement that is not a convention.
What does 585 mean, and how many karats is it?
Convert karats to parts per thousand and back, and see how much actual gold sits inside each standard.
How many millimetres is a 1 carat diamond?
Carats are weight, not size. Convert between the two for eleven shapes, and see how much of the face-up size a shape gives back.
How much does a 1 carat ruby weigh compared to a diamond?
The same size stone weighs different carats in different minerals. A ruby is denser than a diamond, so it looks smaller for its weight.