Inches to Millimeters Conversion

Convert Inches to Millimeters (in to mm)

You are currently converting Length units from Inches to Millimeters

1 Inches (in)


25.4 Millimeters (mm)

Enter the number of Inches(in) to convert into Millimeters(mm).

Inches(in) Value:

Results in Millimeters(mm):

1 (in) = 25.4 (mm)

Do you want to convert Millimeters to Inches?

How to Convert Inches to Millimeters

To convert Inches to Millimeters, multiply the Length by the conversion ratio. One Inches is equal to 25.4 Millimeters, so use this simple formula to convert:

Inches = Millimeters × 25.4

For example, here's how to convert 5 Inches to Millimeters using the formula above.

5 in = (5 × 25.4) = 127 mm

1 Inches is equal to how many Millimeters?

1 Inches is equal to 25.4 Millimeters: 1 in = 25.4 mm

There are 25.4 Millimeters in 1 Inches. To convert from Inches to Millimeters, multiply your figure by 25.4 (or divide by 0.03937) .

1 Millimeters is equal to how many Inches?

1 Millimeters is equal to 0.03937 Inches: 1 mm = 0.03937 in

There are 0.03937 Inches in 1 Millimeters. To convert from Millimeters to Inches, multiply your figure by 0.03937 (or divide by 25.4) .

Feet+Inches to Meters Conversion

Feet (ft):

Inches (in):

Meter (m):

Results in Feet+Inches to Meters:

1ft × 0.3048 = 0.3048 m

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Converting Inches and Millimeters

1 in25.4 mm1 mm0.03937 in
2 in50.8 mm2 mm0.07874 in
3 in76.2 mm3 mm0.11811 in
4 in101.6 mm4 mm0.15748 in
5 in127 mm5 mm0.19685 in
6 in152.4 mm6 mm0.23622 in
7 in177.8 mm7 mm0.27559 in
8 in203.2 mm8 mm0.31496 in
9 in228.6 mm9 mm0.35433 in
10 in254 mm10 mm0.3937 in
11 in279.4 mm11 mm0.43307 in
12 in304.8 mm12 mm0.47244 in
13 in330.2 mm13 mm0.51181 in
14 in355.6 mm14 mm0.55118 in
15 in381 mm15 mm0.59055 in
16 in406.4 mm16 mm0.62992 in
17 in431.8 mm17 mm0.66929 in
18 in457.2 mm18 mm0.70866 in
19 in482.6 mm19 mm0.74803 in
20 in508 mm20 mm0.7874 in