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Inches to mm Chart (Printable)

Fractional inches, their decimal value and the exact millimeter equivalent. 1 inch is exactly 25.4 mm.

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Inches to mm Chart: 1/64 to 1 in

OneEquals

Inches to mm Chart

1/64 to 1 in

mm = in × 25.4

Fraction (in)Decimal (in)Millimeters (mm)
1/640.0156250.397
1/320.031250.794
3/640.0468751.191
1/160.06251.588
5/640.0781251.984
3/320.093752.381
7/640.1093752.778
1/80.1253.175
9/640.1406253.572
5/320.156253.969
11/640.1718754.366
3/160.18754.763
13/640.2031255.159
7/320.218755.556
15/640.2343755.953
1/40.256.350
17/640.2656256.747
9/320.281257.144
19/640.2968757.541
5/160.31257.938
21/640.3281258.334
11/320.343758.731
Fraction (in)Decimal (in)Millimeters (mm)
23/640.3593759.128
3/80.3759.525
25/640.3906259.922
13/320.4062510.319
27/640.42187510.716
7/160.437511.113
29/640.45312511.509
15/320.4687511.906
31/640.48437512.303
1/20.512.700
33/640.51562513.097
17/320.5312513.494
35/640.54687513.891
9/160.562514.288
37/640.57812514.684
19/320.5937515.081
39/640.60937515.478
5/80.62515.875
41/640.64062516.272
21/320.6562516.669
43/640.67187517.066
11/160.687517.463
Fraction (in)Decimal (in)Millimeters (mm)
45/640.70312517.859
23/320.7187518.256
47/640.73437518.653
3/40.7519.050
49/640.76562519.447
25/320.7812519.844
51/640.79687520.241
13/160.812520.638
53/640.82812521.034
27/320.8437521.431
55/640.85937521.828
7/80.87522.225
57/640.89062522.622
29/320.9062523.019
59/640.92187523.416
15/160.937523.813
61/640.95312524.209
31/320.9687524.606
63/640.98437525.003
1125.400
Free printable chart · OneEquals · oneequals.com/length/inches-to-mm/chart/ Any value: oneequals.com/length/inches-to-mm/

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How to use this chart

mm = in × 25.4

Find your value in the left column and read across. For a number that isn't listed, use the converter: it gives any value instantly.

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Printable Inches to mm Chart: fractions from 1/64 in, decimals and millimeters

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Inches to mm Chart FAQ

How do I print this chart or save it as a PDF?

Press "Print / Save PDF". On a computer choose your printer, or "Save as PDF" as the destination. On iPhone or Android, the print screen has a Share or Save option for a PDF file. Only the chart prints: no ads, no menus.

Can I open it in Excel or Google Sheets?

"Download CSV" saves the same table as a spreadsheet file that opens in Excel, Numbers or Google Sheets.

How accurate is the Inches to mm chart?

Values are calculated from the exact definition (mm = in × 25.4) and rounded for reading.