Millimeters to inches conversion calculator
Enter the length in millimeters (mm) and press the Convert button:
How to convert millimeters to inches
1 millimeter is equal to 0.03937007874 inches:
1mm = (1/25.4)″ = 0.03937007874″
The distance d in inches (″) is equal to the distance d in millimeters (mm) divided by 25.4:
d(″) = d(mm) / 25.4
Example
Convert 20 mm to inches:
d(″) = 20mm / 25.4 = 0.7874″
Millimeters to inches conversion table
The fraction inches are rounded to 1/64 resolution.
Millimeters (mm) | Inches (") (decimal) |
Inches (") (fraction) |
---|---|---|
0.01 mm | 0.0004 ″ | 0 ″ |
0.1 mm | 0.0039 ″ | 0 ″ |
1 mm | 0.0394 ″ | 3/64 ″ |
2 mm | 0.0787 ″ | 5/64 ″ |
3 mm | 0.1181 ″ | 1/8 ″ |
4 mm | 0.1575 ″ | 5/32 ″ |
5 mm | 0.1969 ″ | 13/64 ″ |
6 mm | 0.2362 ″ | 15/64 ″ |
7 mm | 0.2756 ″ | 9/32 ″ |
8 mm | 0.3150 ″ | 5/16 ″ |
9 mm | 0.3543 ″ | 23/64 ″ |
10 mm | 0.3937 ″ | 25/64 ″ |
20 mm | 0.7874 ″ | 25/32 ″ |
30 mm | 1.1811 ″ | 1 3/16 ″ |
40 mm | 1.5784 ″ | 1 37/64 ″ |
50 mm | 1.9685 ″ | 1 31/32 ″ |
60 mm | 2.3622 ″ | 2 23/64 ″ |
70 mm | 2.7559 ″ | 2 3/4 ″ |
80 mm | 3.1496 ″ | 3 5/32 ″ |
90 mm | 3.5433 ″ | 3 35/64 ″ |
100 mm | 3.9370 ″ | 3 15/16 ″ |