Discs

Coin Size Fraction IN Decimal IN MM 10K 14K 18K Platinum Palladium 14/20 GF Single/Double Clad Silver
  1/8 0.125 3.1 0.06 0.07 0.08 0.11 0.06 0.002 0.003
3/16 0.188 4.8 0.13 0.15 0.18 0.25 0.14 0.005 0.006
1/4 0.250 6.4 0.24 0.27 0.32 0.44 0.25 0.009 0.011
  5/16 0.313 7.8 0.38 0.43 0.51 0.70 0.39 0.015 0.017
3/8 0.375 9.5 0.54 0.61 0.73 1.00 0.56 0.021 0.024
  7/16 0.438 10.9 0.74 0.84 1.00 1.37 0.77 0.028 0.033
1/2 0.500 12.7 0.96 1.08 1.29 1.78 0.99 0.037 0.043
  17/32 0.531 13.3 1.09 1.23 1.47 2.02 1.13 0.042 0.048
9/16 0.562 14.3 1.21 1.37 1.63 2.25 1.26 0.047 0.054
5/8 0.625 15.9 1.50 1.69 2.02 2.77 1.55 0.058 0.067
Dime 11/16 0.687 17.4 1.81 2.04 2.44 3.36 1.88 0.070 0.081
Penny 3/4 0.750 19.1 2.15 2.43 2.90 3.99 2.23 0.083 0.096
Nickel 13/16 0.812 20.6 2.53 2.86 3.41 4.69 2.62 0.098 0.113
7/8 0.875 22.2 2.93 3.31 3.95 5.44 3.04 0.113 0.131
Quarter 1 1.000 25.4 3.83 4.33 5.16 7.10 3.97 0.148 0.172
1 1/8 1.125 28.6 4.85 5.48 6.53 8.99 5.03 0.187 0.217
1 3/16 1.187 30.1 5.40 6.10 7.28 10.01 5.60 0.209 0.242
Half Dollar 1 1/4 1.250 31.8 5.98 6.76 8.06 11.09 6.21 0.231 0.268
1 3/8 1.375 34.9 7.24 8.18 9.75 13.42 7.51 0.280 0.324
Dollar 1 1/2 1.500 38.1 8.62 9.73 11.61 15.98 8.94 0.333 0.386
1 5/8 1.625 41.3 10.11 11.42 13.62 18.75 10.49 0.391 0.453
1 3/4 1.750 44.5 11.73 13.25 15.80 21.75 12.16 0.454 0.525
2 2.000 50.8 15.32 17.3 20.64 28.40 15.89 0.592 0.686
Approximate weight per disc in 18ga (.040"). Gold in pennyweights (dwt) - Gold Filled and Silver in ounces (oz)
3/16" to 2" diameter from 10 to 30 gauge.
Silver supplied in even gauges only.
Argentium is currently supplied in 16, 18, 20, 22, 24, and 26 gauge.

Reference Pages

Circumference & Areas - Fractions & Decimal Equivalents