Measures and Equivalents Millimeter, Fraction and Decimal Conversion Chart Weights and Measures Chart Diamond Carat to Millimeters Conversion Chart  Milimeter, Fraction and Decimal Conversion Chart Millimeter Decimal Fraction B&S   Millimeter Decimal Fraction B&S 0.10 .0039   38 1.40 .0551     0.20 .0079   32 1.45 .0571   15 0.25 .0098   30 1.50 .0591     0.28 .0110   29 1.51 .0594     0.30 .0118   28 1.59 .0626 1/16   0.34 .0134     1.60 .0630   14 0.36 .0142   27 1.61 .0634     0.37 .0146     1.70 .0669     0.40 .0157 1/64 26 1.75 .0689     0.41 .0161     1.78 .0701     0.46 .0181   25 1.83 .0720     0.50 .0197   24 1.85 .0728     0.51 .0201     1.93 .0760     0.53 .0209     1.98 .0780 5/64   0.56 .0220   23 1.99 .0783     0.57 .0224     2.00 .0787     0.60 .0236     2.06 .0811   12 0.61 .0240     2.08 .0819     0.64 .0252   22 2.18 .0858     0.66 .0260     2.25 .0886     0.70 .0276   21 2.30 .0906   11 0.71 .0280     2.37 .0933     0.74 .0291     2.38 .0937 3/32   0.75 .0295     2.44 .0961     0.79 .0311     2.50 .0984     0.80 .0315 1/32   2.53 .0969     0.81 .0319     2.58 .1016     0.82 .0323   20 2.60 .1024   10 0.84 .0331     2.64 .1039     0.89 .0350     2.71 .1067     0.90 .0354     2.75 .1083     0.91 .0358   19 2.78 .1094 7/64   0.94 .0370     2.79 .1098     0.97 .0382     2.82 .1110     0.99 .0390     2.87 .1130     1.00 .0394   18 2.90 .1142   9 1.02 .0402     2.95 .1161     1.04 .0409     3.00 .1181     1.07 .0421     3.05 .1201     1.09 .0429     3.18 .1252 1/8   1.14 .0449   17 3.25 .1280   8 1.18 .0465     3.45 .1358     1.19 .0469 3/64   3.50 .1378     1.25 .0492     3.57 .1406 9/64   1.30 .0512   16 3.66 .1441   7 1.32 .0520     3.73 .1469     Millimeter, Fraction and Decimal Conversion Chart Weights and Measures Chart Diamond Carat to Millimeters Conversion Chart  Weights and Measures Chart Change From To Multiply By Carats Pennyweights (dwts) .12860 Carats Grams .2 Centimeters Inches .3937 Grams Carats 5 Grams Pennyweights (dwts) .64301 Grams Kilograms  .001 Grams Ounces, Troy  .03215 Inches Centimeters  2.54001 Inches Millimeters  25.40 Kilograms Grams 1.000 Kilograms Ounces, Troy 32.1507 Kilograms Pennyweights (dwts)  643.014 Kilograms Pounds, Troy  2.6792 Ounces, Troy Pennyweights (dwts)  20 Ounces, Troy Kilograms  .031103 Ounces, Troy Pounds, Troy  .08333 Ounces, Troy Grams  31.1035 Pennyweights (dwts) Carats  7.778 Pennyweights (dwts) Grams  1.5552 Pennyweights (dwts) Kilograms  .001555 Pennyweights (dwts) Ounces, Troy  .05 Pennyweights (dwts) Pounds, Troy   .00417 Millimeter, Fraction and Decimal Conversion Chart Weights and Measures Chart Diamond Carat to Millimeters Conversion Chart  Diamond Carat to Millimeter Conversion Chart Carat   Rnd mm Carat   Rnd mm Carat   Rnd mm .005 1.00 .10 1/10 3.00 .85    6.25 .0075 1.35 .105 3.05 1.00  1 6.50 .01 1.50 .11 3.10 1.25  1 1/4 7.00  .0125 1.55 .12 1/8 3.20 1.50  1 1/2 7.50  .015 1.60 .125 3.25 1.75 1 3/4 7.75  .0175 1.65 .15  1/7 3.40 2.00  2 8.00 .02 1.75 .18 3.70 2.25 2 1/4 8.50  .025 1.80 .20 1/5 3.80 2.50  2 1/2 9.00  .0275 1.90 .25 1/4 4.00 2.75  2 3/4 9.25  .03 2.00 .28    3.00  3 9.50  .04 2.20 .33 1/3 4.25 3.25  3 1/4    .045 2.30 .35 4.50 3.50  3 1/2 9.75  .05 2.40 .40  3/8 4.75 3.75  3 3/4    .06 2.50 .50  1/2 5.00 4.00 4 10.00  .07 2.70 .60 5.25 4.50  4 1/2 10.50  .075 2.72 .65  5/8 5.50 5.00  5 11.00 .08 1/12 2.75 .75  3/4 6.00 6.00  6 12.00 .085 2.80