CONVERT MM TO INCH

Enter millimeters:
 
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Inches decimal result:
Feet+inches result:
Calculation
Millimeters Inches

How to convert mm 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″

MM to inches conversion table

The fraction inches are rounded to 1/64 resolution.

Millimeters (mm)Inches (“)
(decimal)
Inches (“)
(fraction)
0.01 mm0.0004 ″0 ″
0.1 mm0.0039 ″0 ″
1 mm0.0394 ″3/64 ″
2 mm0.0787 ″5/64 ″
3 mm0.1181 ″1/8 ″
4 mm0.1575 ″5/32 ″
5 mm0.1969 ″13/64 ″
6 mm0.2362 ″15/64 ″
7 mm0.2756 ″9/32 ″
8 mm0.3150 ″5/16 ″
9 mm0.3543 ″23/64 ″
10 mm0.3937 ″25/64 ″
20 mm0.7874 ″25/32 ″
30 mm1.1811 ″1 3/16 ″
40 mm1.5784 ″1 37/64 ″
50 mm1.9685 ″1 31/32 ″
60 mm2.3622 ″2 23/64 ″
70 mm2.7559 ″2 3/4 ″
80 mm3.1496 ″3 5/32 ″
90 mm3.5433 ″3 35/64 ″
100 mm3.9370 ″3 15/16 ″