Welcome to Gold Biscuit! We have everything you need to know if you’re thinking about investing in small gold bars. Some of the helpful information you’ll find here is facts about gold biscuits, the different types and what makes them different to gold bars as well as tips on buying and selling gold.

How many grams in a gold bar?

How many grams in a gold bar? It does, of course, depend on the size of the gold bar, but here’s a little more information which should help you work it out.

Gold is priced by the troy ounce, which is usually simply referred to as an ounce when talking about gold.

There are 31.1 grams to a troy ounce.

Note: the Troy ounce is different to the avoirdupois ounce which is an Imperial weight. There are 28.35 grams to an avoirdupois ounce.

The ‘Good Delivery’ bar is the standard gold bar traded and held internationally by central banks and bullion dealers. This has a nominal weight of 400oz (12,441.39 grams). The minimum purity required is 99.5% and gold content is permitted to vary between 350oz (10,886.22 grams) and 430oz (13,374,49 grams).

Other useful gold weight conversions:

  • One tonne = 1000 kilograms = 32,150.75 troy ounces
  • One kilogram = 1000 grams = 32.15 troy ounces


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