Decimal Equivalents & Metric Conversion Charts
Fractional Inches to Decimal Inches
| Fraction | Decimal Inches | Millimeters |
|---|---|---|
| 1⁄64” | 0.015625 | 0.396875 |
| 1⁄32” | 0.03125 | 0.79375 |
| 3⁄64” | 0.046875 | 1.190625 |
| 1⁄16” | 0.0625 | 1.5875 |
| 5⁄64” | 0.078125 | 1.984375 |
| 3⁄32” | 0.09375 | 2.38125 |
| 7⁄64” | 0.109375 | 2.778125 |
| 1⁄8” | 0.125 | 3.175 |
| 9⁄64” | 0.140625 | 3.571875 |
| 5⁄32” | 0.15625 | 3.96875 |
| 11⁄64” | 0.171875 | 4.365625 |
| 3⁄16” | 0.1875 | 4.7625 |
| 13⁄64” | 0.203125 | 5.159375 |
| 7⁄32” | 0.21875 | 5.55625 |
| 15⁄64” | 0.234375 | 5.953125 |
| 1⁄4” | 0.25 | 6.35 |
| 17⁄64” | 0.265625 | 6.746875 |
| 9⁄32” | 0.28125 | 7.14375 |
| 19⁄64” | 0.296875 | 7.540625 |
| 5⁄16” | 0.3125 | 7.9375 |
| 21⁄64” | 0.328125 | 8.334375 |
| 11⁄32” | 0.34375 | 8.73125 |
| 23⁄64” | 0.359375 | 9.128125 |
| 3⁄8” | 0.375 | 9.525 |
| 25⁄64” | 0.390625 | 9.921875 |
| 13⁄32” | 0.40625 | 10.31875 |
| 27⁄64” | 0.421875 | 10.715625 |
| 7⁄16” | 0.4375 | 11.1125 |
| 29⁄64” | 0.453125 | 11.509375 |
| 15⁄32” | 0.46875 | 11.90625 |
| 31⁄64” | 0.484375 | 12.303125 |
| 1⁄2” | 0.5 | 12.7 |
| 33⁄64” | 0.515625 | 13.096875 |
| 17⁄32” | 0.53125 | 13.49375 |
| 35⁄64” | 0.546875 | 13.890625 |
| 9⁄16” | 0.5625 | 14.2875 |
| 37⁄64” | 0.578125 | 14.684375 |
| 19⁄32” | 0.59375 | 15.08125 |
| 39⁄64” | 0.609375 | 15.478125 |
| 5⁄8” | 0.625 | 15.875 |
| 41⁄64” | 0.640625 | 16.271875 |
| 21⁄32” | 0.65625 | 16.66875 |
| 43⁄64” | 0.671875 | 17.065625 |
| 11⁄16” | 0.6875 | 17.4625 |
| 45⁄64” | 0.703125 | 17.859375 |
| 23⁄32” | 0.71875 | 18.25625 |
| 47⁄64” | 0.734375 | 18.653125 |
| 3⁄4” | 0.75 | 19.05 |
| 49⁄64” | 0.765625 | 19.446875 |
| 25⁄32” | 0.78125 | 19.84375 |
| 51⁄64” | 0.796875 | 20.240625 |
| 13⁄16” | 0.8125 | 20.6375 |
| 53⁄64” | 0.828125 | 21.034375 |
| 27⁄32” | 0.84375 | 21.43125 |
| 55⁄64” | 0.859375 | 21.828125 |
| 7⁄8” | 0.875 | 22.225 |
| 57⁄64” | 0.890625 | 22.621875 |
| 29⁄32” | 0.90625 | 23.01875 |
| 59⁄64” | 0.921875 | 23.415625 |
| 15⁄16” | 0.9375 | 23.8125 |
| 61⁄64” | 0.953125 | 24.209375 |
| 31⁄32” | 0.96875 | 24.60625 |
| 63⁄64” | 0.984375 | 25.003125 |
| 1″ | 1 | 25.4 |
Millimeters to Decimal Inches
| Millimeters | Decimal Inches |
|---|---|
| .1 | .00394 |
| .2 | .00787 |
| .3 | 01181 |
| .4 | .01575 |
| .5 | .01968 |
| .6 | .02362 |
| .7 | .0275 |
| .8 | .0315 |
| .9 | .03541 |
| 1 | .0394 |
| 2 | .0787 |
| 3 | .1181 |
| 4 | .1575 |
| 5 | .1968 |
| 6 | .2362 |
| 7 | .2756 |
| 8 | .3150 |
| 9 | .3543 |
| 10 | .3937 |
| 11 | .4331 |
| 12 | .4724 |
| 13 | .5118 |
| 14 | .5512 |
| 15 | .5905 |
| 16 | .6299 |
| 17 | .6693 |
| 18 | .7087 |
| 19 | .7480 |
| 20 | .7874 |
| 21 | .8268 |
| 22 | .8661 |
| 23 | .9055 |
| 24 | .9449 |
| 25 | .9842 |
| 26 | 1.0236 |
| 27 | 1.0630 |
| 28 | 1.1024 |
| 29 | 1.1417 |
| 30 | 1.1811 |
| 31 | 1.2205 |
| 32 | 1.2598 |
| 33 | 1.2992 |
| 34 | 1.3386 |
| 35 | 1.3779 |
| 36 | 1.4173 |
| 37 | 1.4567 |
| 38 | 1.4961 |
| 39 | 1.5354 |
| 40 | 1.5748 |
| 41 | 1.6142 |
| 42 | 1.6535 |
| 43 | 1.6929 |
| 44 | 1.7323 |
| 45 | 1.7716 |
| 46 | 1.8110 |
| 47 | 1.8504 |
| 48 | 1.8898 |
| 49 | 1.9291 |
| 50 | 1.9685 |
| 51 | 2.0079 |
| 52 | 2.0472 |
| 53 | 2.0866 |
| 54 | 2.1260 |
| 55 | 2.1653 |
| 56 | 2.2047 |
| 57 | 2.2441 |
| 58 | 2.2835 |
| 59 | 2.3228 |
| 60 | 2.3622 |
| 61 | 2.4016 |
| 62 | 2.4409 |
| 63 | 2.4803 |
| 64 | 2.5197 |
| 65 | 2.5590 |
| 66 | 2.5984 |
| 67 | 2.6378 |
| 68 | 2.6772 |
| 69 | 2.7165 |
| 70 | 2.7559 |
| 71 | 2.7953 |
| 72 | 2.8346 |
| 73 | 2.8740 |
| 74 | 2.9134 |
| 75 | 2.9527 |
| 76 | 2.9921 |
| 77 | 3.0315 |
| 78 | 3.0709 |
| 79 | 3.1102 |
| 80 | 3.1496 |
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