Metric Conversion (mm to inches)

Below is a chart to help out on the Metric (mm) conversion to inches (Fraction) and in Inches (decimal).

MM Approx. Size In Inches Exact Size In Inches
1mm 1/25" 0.03937
2mm 1/16" 0.07874
3mm 3/32" 0.11811
4mm 1/8" 0.15748
5mm 3/16" 0.19685
6mm Just short of 1/4" 0.23622
7mm Little over 1/4" 0.27559
8mm 5/16" 0.31496
9mm Just short of 3/8" 0.35433
10mm Little over 3/8" 0.3937
11mm 7/16" 0.43307
12mm Just short of 1/2" 0.47244
13mm Little over 1/2" 0.51181
14mm 9/16" 0.55118
15mm Just short of 5/8" 0.59055
16mm 5/8" 0.62992
17mm Just short of 11/16" 0.66929
18mm Just short of 3/4" 0.70866
19mm Little under 3/4" 0.74803
20mm Just short of 13/16" 0.7874
21mm Little over 13/16" 0.82677
22mm Just short of 7/8" 0.86614
23mm Little over 7/8" 0.90551
24mm 15/16" 0.94488
25mm 1" 0.98425
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