# 1mm to inches

## 1mm to inches conversion calculator

1mm = 0.03937in

Note: You can increase or decrease the accuracy of this answer by selecting the number of significant figures required from the options above the result.

### Millimeters to Inches conversion formula

Inches = Millimeters / 25.4

### 1 Millimeters to Inches calculation

Inches = Millimeters / 25.4

Inches = 1 / 25.4

Inches = 0.03937

## How to convert 1 Millimeters to Inches

Multiply the Millimeters value by the Millimeters to Inches conversion factor: 1 / 25.4 = 0.03937

## What is a millimeter?

A millimeter is a thousandth of a meter (1/1000) which is the SI (International System of Units) unit of length. It is normally used to measure small lengths like the thickness of a sheet of paper or the dimensions of a small object.

One millimeter is approximately equal to 0.03937 inches (about 1/25th). Presicely there are 25.4 millimeters in an inch and it is often used in science and engineering. It is used in countries that have adopted the metric system.

You may come across millimeters when measuring the size of electronic components, jewelry or even the thickness of a fingernail.

## What is an inch?

An inch is a length unit normally used in the United States and, occasionally, in the United Kingdom. It is defined as a twelth (1/12th) of a foot. The inch is normally subdivided into fractions of an inch such as the ½, ¼ and ⅛.

Historically, an inch was originally based on the width of a man's thumb. The inch is still commonly used in the United States for everyday measurements and worldwide for the size of TV and computer screens and clothing.

Inches are used in combination with other units of imperial measurement such as feet and yards. For example, a standard door in the United States a football field is 100 yards long or 300 feet or 3,600 inches.

Starting value
Increment
Accuracy
Millimeters
Inches
0mm
0.00000in
1mm
0.03937in
2mm
0.07874in
3mm
0.11811in
4mm
0.15748in
5mm
0.19685in
6mm
0.23622in
7mm
0.27559in
8mm
0.31496in
9mm
0.35433in
10mm
0.39370in
11mm
0.43307in
12mm
0.47244in
13mm
0.51181in
14mm
0.55118in
15mm
0.59055in
16mm
0.62992in
17mm
0.66929in
18mm
0.70866in
19mm
0.74803in
Millimeters
Inches
20mm
0.78740in
21mm
0.82677in
22mm
0.86614in
23mm
0.90551in
24mm
0.94488in
25mm
0.98425in
26mm
1.02362in
27mm
1.06299in
28mm
1.10236in
29mm
1.14173in
30mm
1.18110in
31mm
1.22047in
32mm
1.25984in
33mm
1.29921in
34mm
1.33858in
35mm
1.37795in
36mm
1.41732in
37mm
1.45669in
38mm
1.49606in
39mm
1.53543in
Millimeters
Inches
40mm
1.57480in
41mm
1.61417in
42mm
1.65354in
43mm
1.69291in
44mm
1.73228in
45mm
1.77165in
46mm
1.81102in
47mm
1.85039in
48mm
1.88976in
49mm
1.92913in
50mm
1.96850in
51mm
2.00787in
52mm
2.04724in
53mm
2.08661in
54mm
2.12598in
55mm
2.16535in
56mm
2.20472in
57mm
2.24409in
58mm
2.28346in
59mm
2.32283in
Millimeters
Inches
60mm
2.36220in
61mm
2.40157in
62mm
2.44094in
63mm
2.48031in
64mm
2.51969in
65mm
2.55906in
66mm
2.59843in
67mm
2.63780in
68mm
2.67717in
69mm
2.71654in
70mm
2.75591in
71mm
2.79528in
72mm
2.83465in
73mm
2.87402in
74mm
2.91339in
75mm
2.95276in
76mm
2.99213in
77mm
3.03150in
78mm
3.07087in
79mm
3.11024in