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Diameters of Australian Coins

When purchasing coin holders or capsules for your collection you may be uncertain as to what size to choose for your coins.  The sizes listed on items are for the coin diameter and the following list gives the diameters of all Australian coins:

Pre Decimal Coins

  • ½d - 25.5mm
  • 1d - 30.8mm
  • 3d - 16mm
  • 6d - 19mm
  • 1/- - 23.5mm
  • 2/- - 28.5mm
  • Crown - 38.5mm
  • ½ sovereign - 19mm
  • 1 sovereign - 21.5mm

Decimal Coins

  • 1c - 17.53mm
  • 2c - 21.59mm
  • 5c - 19.41mm
  • 10c - 23.6mm
  • 20c - 28.52mm
  • 50c - 31.5mm
  • $1 - 25mm
  • $2 - 20.62mm
  • $5 - 38.74mm
  • $10 - 34mm
  • $100 - 25mm
  • $200 - 24mm
There are currently delivery delays within Australia and Overseas due to limited cargo capacity and health restrictions.