Printable reference chart
Inch Fraction to Decimal Chart
This decimal to fraction chart lists every sixty-fourth of an inch from 0 to 1, with reduced fractions, five-place decimals, millimetres, and percentages. The same table works in both directions: find a fraction to read its decimal, or scan the decimal column to select the nearest tape-measure fraction. All 65 rows are rendered in HTML.
Decimal to Fraction Chart
| Fraction (in) | Decimal (in) | Millimetres | Percent of inch |
|---|---|---|---|
| 0 | 0.00000 | 0.000 | 0.00% |
| 1/64 | 0.01563 | 0.397 | 1.56% |
| 1/32 | 0.03125 | 0.794 | 3.13% |
| 3/64 | 0.04688 | 1.191 | 4.69% |
| 1/16 | 0.06250 | 1.587 | 6.25% |
| 5/64 | 0.07813 | 1.984 | 7.81% |
| 3/32 | 0.09375 | 2.381 | 9.38% |
| 7/64 | 0.10938 | 2.778 | 10.94% |
| 1/8 | 0.12500 | 3.175 | 12.50% |
| 9/64 | 0.14063 | 3.572 | 14.06% |
| 5/32 | 0.15625 | 3.969 | 15.63% |
| 11/64 | 0.17188 | 4.366 | 17.19% |
| 3/16 | 0.18750 | 4.762 | 18.75% |
| 13/64 | 0.20313 | 5.159 | 20.31% |
| 7/32 | 0.21875 | 5.556 | 21.88% |
| 15/64 | 0.23438 | 5.953 | 23.44% |
| 1/4 | 0.25000 | 6.350 | 25.00% |
| 17/64 | 0.26563 | 6.747 | 26.56% |
| 9/32 | 0.28125 | 7.144 | 28.13% |
| 19/64 | 0.29688 | 7.541 | 29.69% |
| 5/16 | 0.31250 | 7.938 | 31.25% |
| 21/64 | 0.32813 | 8.334 | 32.81% |
| 11/32 | 0.34375 | 8.731 | 34.38% |
| 23/64 | 0.35938 | 9.128 | 35.94% |
| 3/8 | 0.37500 | 9.525 | 37.50% |
| 25/64 | 0.39063 | 9.922 | 39.06% |
| 13/32 | 0.40625 | 10.319 | 40.63% |
| 27/64 | 0.42188 | 10.716 | 42.19% |
| 7/16 | 0.43750 | 11.112 | 43.75% |
| 29/64 | 0.45313 | 11.509 | 45.31% |
| 15/32 | 0.46875 | 11.906 | 46.88% |
| 31/64 | 0.48438 | 12.303 | 48.44% |
| 1/2 | 0.50000 | 12.700 | 50.00% |
| 33/64 | 0.51563 | 13.097 | 51.56% |
| 17/32 | 0.53125 | 13.494 | 53.13% |
| 35/64 | 0.54688 | 13.891 | 54.69% |
| 9/16 | 0.56250 | 14.287 | 56.25% |
| 37/64 | 0.57813 | 14.684 | 57.81% |
| 19/32 | 0.59375 | 15.081 | 59.38% |
| 39/64 | 0.60938 | 15.478 | 60.94% |
| 5/8 | 0.62500 | 15.875 | 62.50% |
| 41/64 | 0.64063 | 16.272 | 64.06% |
| 21/32 | 0.65625 | 16.669 | 65.63% |
| 43/64 | 0.67188 | 17.066 | 67.19% |
| 11/16 | 0.68750 | 17.462 | 68.75% |
| 45/64 | 0.70313 | 17.859 | 70.31% |
| 23/32 | 0.71875 | 18.256 | 71.88% |
| 47/64 | 0.73438 | 18.653 | 73.44% |
| 3/4 | 0.75000 | 19.050 | 75.00% |
| 49/64 | 0.76563 | 19.447 | 76.56% |
| 25/32 | 0.78125 | 19.844 | 78.13% |
| 51/64 | 0.79688 | 20.241 | 79.69% |
| 13/16 | 0.81250 | 20.637 | 81.25% |
| 53/64 | 0.82813 | 21.034 | 82.81% |
| 27/32 | 0.84375 | 21.431 | 84.38% |
| 55/64 | 0.85938 | 21.828 | 85.94% |
| 7/8 | 0.87500 | 22.225 | 87.50% |
| 57/64 | 0.89063 | 22.622 | 89.06% |
| 29/32 | 0.90625 | 23.019 | 90.63% |
| 59/64 | 0.92188 | 23.416 | 92.19% |
| 15/16 | 0.93750 | 23.813 | 93.75% |
| 61/64 | 0.95313 | 24.209 | 95.31% |
| 31/32 | 0.96875 | 24.606 | 96.88% |
| 63/64 | 0.98438 | 25.003 | 98.44% |
| 1/1 | 1.00000 | 25.400 | 100.00% |
Frequently asked questions
Can I print the inch fraction to decimal?
Yes. Use the Letter or A4 PDF links, or print the HTML table directly. The printable view removes navigation and keeps the title, table, source note, and brand.
Is the table available without JavaScript?
Yes. Every row is rendered as ordinary HTML with a caption and scoped headers. JavaScript is not required to read or quote the values.
Can I use the values as a final structural design?
No. Conversion charts are direct references, but span and member-size charts are planning examples. Current code tables, species, grade, loads, connections, and professional review govern structural work.
How often is the chart reviewed?
The review date is shown on the page and in the Dataset schema. Source-linked code tables are checked when their governing publication changes.
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