Imperial to Troy Converter

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Select the units that you want to convert with the drop down boxes and then enter the amount to convert in the box to convert to the other unit.

Imperial & Troy Weights

There are some similarities in naming between imperial and troy weights, both use pounds, ounces and grains, but although the grain is the same in both systems the pound and the ounce are of different weights and there are only 12 ounces to the troy pound whereas there are 16 ounces to the imperial pound.

Comparison Between Troy Weights & Imperial Weights

Imperial

  • 1 pound = 16 ounces
  • 1 ounce = 16 drams
  • 1 dram = 27.34375 grains

Troy

  • 1 troy pound = 12 troy ounces
  • 1 troy ounce = 20 pennyweights
  • 1 pennyweight = 24 grains

Note: The grain is the same weight in both systems and one imperial pound is 7,000 grains and 1 troy pound is 5,760 grains

Conversion Formulae

To convert from imperial to troy weights or vice versa the conversion formulae given below can be used.

Imperial Pound to Troy Formulae

  • 1 pound = 7000 grains
  • 1 pound = 291.6667 pennyweights
  • 1 pound = 14.5833 troy ounces
  • 1 pound = 1.2153 troy pounds

Imperial Ounce to Troy Formulae

  • 1 ounce = 437.5 grains
  • 1 ounce = 18.2292 pennyweights
  • 1 ounce = 0.9115 troy ounces
  • 1 ounce = 0.0760 troy pounds

Troy Pound to Imperial Formulae

  • 1 troy pound = 5,760 grains
  • 1 troy pound = 210.6514 drams
  • 1 troy pound = 13.1657 ounces
  • 1 troy pound = 0.8228 pounds

Troy Ounce to Imperial Formulae

  • 1 troy ounce = 480 grains
  • 1 troy ounce = 17.5543 drams
  • 1 troy ounce = 1.0971 ounces
  • 1 troy ounce = 0.0686 pounds