Gold Weight Calculator

Your details

Select the alloy. Density is taken from published values for each karat grade.
Choose the closest shape. The calculator uses the exact geometric volume formula for each shape.
Length of the sheet in millimetres.
mm
Width of the sheet in millimetres.
mm
Thickness of the sheet in millimetres.
mm
Number of identical pieces. The mass and value outputs are multiplied by this.
Extra metal to buy to cover filing, polishing and casting losses. Industry average is 3-8% for fabricated jewellery.
%
Current gold (or metal) spot price per troy ounce in USD. Leave at 0 to skip the value estimate.
USD
Mass (grams)
19.631g

Total mass including wastage allowance

Mass (troy oz)0.6311troy oz
Mass (kg)0.01963kg
Volume1.2cm³
Pure gold content14.022g
Wastage allowance0.935g
Total mass (g)19.631
Pure gold (g)14.022
Wastage (g)0.935

18K sheet: 19.63 g to purchase

  • Total mass to purchase: 19.63 g (0.631 troy oz) for 1 sheet.
  • Pure gold content of the piece: 14.02 g (0.451 troy oz of 24k gold).
  • Wastage allowance: 0.93 g extra to cover filing, polishing and casting loss.

Next stepCheck today's live spot price on a metals exchange to get a current melt value. The fabrication and retail price of finished jewellery is typically 1.5 to 4x the raw melt value.

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