Metric to Inches Chart

mm to Inch Conversion Chart mm Inches (approximate)

Simple Conversion To the nearest 1/32 inch Decimal
mm = fractional inch = decimal


1mm = 1/32" = 0.04
2mm = 1/16 - 3/32 = 0.08
3mm = 1/8 - 4/32 0.12
4mm = 3/16 - 5/32 = 0.16
5mm = 3/16 - 6/32 = 0.20
6mm = 1/4 - 8/32 = 0.24
7mm = 1/4 - 9/32 = 0.28
8mm = 5/16 - 10/32 = 0.31
9mm = 3/8 - 11/32 = 0.35
10mm = 3/8 -13/32 = 0.39
11mm = 7/16- 14/32 = 0.43
12mm = 1/2 - 15/32 = 0.47
13mm = 1/2 -16/32 = 0.51
14mm = 9/16 - 18/32 = 0.55
15mm = 9/16 - 19/32 = 0.59
16mm = 5/8 - 20/32 = 0.63
17mm = 11/16 - 21/32 = 0.67
18mm = 11/16 -23/32 = 0.71
19mm = 3/4 - 24/32 = 0.75
20mm = 13/16 - 25/32 = 0.79
21mm = 13/16 - 26/32 = 0.83
22mm = 7/8 - 28/32 = 0.87
23mm = 7/8 - 29/32 = 0.91
24mm = 15/16 - 30/32 =0.94
25mm = 1 - 31/32 = 0.98