Last Updated: February 09, 2024

Precious Metal Weight Conversion Table

Precious Metal Weight Conversion Table
November 07, 2023 / Diamond Education

This chart facilitates metal weight conversion. For example, to convert 3 grams of 18ct White Gold to Platinum, multiply by 1.435, resulting in 4.305 grams of Platinum. Use the corresponding multiplication factor from the chart to convert between metals or wax.

  Palladium (950) Platinum (950) 22ct Yellow Gold 18ct White Gold 18ct Red Gold 18ct Yellow Gold 9ct White Gold 9ct Red Gold 9ct Yellow Gold Sterling Silver Wax / Resin
Wax / Resin 12 21.211 18.737 16.632 15.948 16.422 13.264 11.895 11.685 10.895 1
Sterling Silver 1.101 1.98 1.745 1.545 1.48 1.525 1.225 1.095 1.075 1 0.092
9ct Yellow Gold 1.027 1.905 1.67 1.47 1.405 1.45 1.15 1.075 1 0.933 0.086
9ct Red Gold 1.009 1.885 1.65 1.45 1.385 1.43 1.13 1 0.983 0.916 0.085
9ct White Gold 0.905 1.755 1.52 1.32 1.255 1.3 1 0.897 0.881 0.822 0.076
18ct Yellow Gold 0.731 1.455 1.22 1.02 0.972 1 0.808 0.725 0.712 0.664 0.061
18ct Red Gold 0.752 1.5 1.265 1.065 1 1.03 0.832 0.746 0.733 0.684 0.063
18ct White Gold 0.722 1.435 1.2 1 0.959 0.988 0.798 0.716 0.703 0.656 0.061
22ct Yellow Gold 0.64 1.235 1 0.888 0.852 0.877 0.708 0.635 0.624 0.582 0.054
Platinum (950) 0.566 1 0.884 0.785 0.752 0.775 0.626 0.561 0.551 0.514 0.048
Palladium (950) 1 1.768 1.561 1.386 1.329 1.369 1.105 0.991 0.974 0.908 0.083

HOW TO USE THE CHART:

  1. From the left most column find the metal (or wax) that you would like to convert from.
  2. From the top row find the metal (or wax) that you would like to convert to.
  3. Find the common cell & use the multiplication factor on the weight you would like to convert from.

For eg., the multiplication to convert from 18ct White Gold to Platinum is 1.435. So a 3 grams 18ct white gold ring will be 3 x 1.435 = 4.305 grams in Platinum

This is a quite a handy chart so feel free to share this page.