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mm to inches Converter

mm
Feet+inches:

*Input the length in millimeter to convert it to inches.

What’s new?

This newly designed mm to Inches Converter allows you to effortlessly convert millimeters to inches with exact decimal precision (e.g., 5mm = 0.1969″) or simplified fractions (e.g., 10mm ≈ 25/64″) results. The converter is designed for engineers, designers, and hobbyists who demand accuracy in technical blueprints, jewelry crafting, DIY projects or anyone who need a length conversion.

You can also switch seamlessly between units (mm, inches, feet, yeard, meter) while maintaining a clean workflow. Unlike basic calculators, no server required, no data transfers, no delays, all calculations happen locally on your device, ensuring 100% privacy and lightning-fast results, whether you’re on a phone, tablet, or desktop.

Whether you’re machining parts, adjusting international product specs, or measuring delicate materials, this tool ensures reliable results every time.

1 inch = 25.4 millimeters

1 millimeter = 0.03937 inches

Millimeter

Millimeter (mm) is a metric unit of length.

One millimeter is equal to 1/1000 of a meter (m).
One millimeter is equal to 1/10 of a centimeter (cm).
One millimeter is eqaul to 1/25.4 of an inch (in).

Inch

Inch (in or ″) is a unit of length in the imperial and US customary systems.
One inch is equal to 1/12 of a foot (ft).
One inch is equal to 1/36 of a yard (yd).
One inch is equal to 2.54 centimeters (cm).

How to convert Millimeters to Inches

To convert millimeters to inches, divide the millimeter value by 25.4 or multiply by 0.03937. For quick estimates, you can just divide millimeters by 25 (e.g., 100 mm ÷ 25 ≈ 4″).

mm to inches formula: 

Inches = Millimeters / 25.4

     or

Inches = Millimeters × 0.03937

For example, convert 50 mm to inches:

50 ÷ 25.4 = 1.9685 inches

Fraction Conversion:

Multiply the decimal part by 16 for fractional inches:

0.9685 × 16 ≈ 15.5 → ≈ ¹⁵⁄₁₆”

Final result: 1 ¹⁵⁄₁₆”

Alternatively, you can use our millimeter to inches Converter. Simply enter the number of millimeter, and it will automatically convert the value to inches for you.

How many millimeters in an inch?

There are 25.4 millimeters in an inch. 

1 in = 25.4 × 1 in = 25.4 mm

How many inches in a millimeter?

There are 0.03937 inches in a millimeter.

1mm = 1 / 25.4 = 0.03937 in

Millimeters to inches conversion table

0.01 mm = 0.0004 in = 1/2560 in
0.1 mm = 0.0039 in = 1/256 in
1 mm = 0.0394 in = 3/64 in
1.5 mm = 0.0591 in = 1/16 in
2 mm = 0.0787 in = 5/64 in
2.5 mm = 0.0984 in = 3/32 in
3 mm = 0.1181 in = 1/8 in
3.5 mm = 0.1378 in = 9/64 in
4 mm = 0.1575 in = 5/32 in
4.5 mm = 0.1772 in = 11/64 in
5 mm = 0.1969 in = 3/16 in
5.5 mm = 0.2165 in = 7/32 in
6 mm = 0.2362 in = 15/64 in
6.5 mm = 0.2559 in = 1/4 in
7 mm = 0.2756 in = 17/64 in
7.5 mm = 0.2953 in = 19/64 in
8 mm = 0.3150 in = 5/16 in
8.5 mm = 0.3346 in = 21/64 in
9 mm = 0.3543 in = 23/64 in
9.5 mm = 0.3740 in = 3/8 in
10 mm = 0.3937 in = 25/64 in
11 mm = 0.4331 in = 7/16 in
12 mm = 0.4724 in = 15/32 in
13 mm = 0.5118 in = 33/64 in
14 mm = 0.5512 in = 35/64 in
15 mm = 0.5906 in = 19/32 in
16 mm = 0.6299 in = 5/8 in
17 mm = 0.6693 in = 43/64 in
18 mm = 0.7087 in = 45/64 in
19 mm = 0.7480 in = 3/4 in
20 mm = 0.7874 in = 25/32 in
30 mm = 1.1811 in = 1 3/16 in
40 mm = 1.5748 in = 1 37/64 in
50 mm = 1.9685 in = 1 15/16 in
60 mm = 2.3622 in = 2 23/64 in
70 mm = 2.7559 in = 2 3/4 in
80 mm = 3.1496 in = 3 5/32 in
90 mm = 3.5433 in = 3 35/64 in
100 mm = 3.9370 in = 3 15/16 in
110 mm = 4.3307 in = 4 21/64 in
120 mm = 4.7244 in = 4 23/32 in
130 mm = 5.1181 in = 5 1/8 in
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