Convert Inches to Millimeters (in to mm)

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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

Inches	Millimeters	Millimeters	Inches
1 in	25.4 mm	1 mm	0.03937 in
2 in	50.8 mm	2 mm	0.07874 in
3 in	76.2 mm	3 mm	0.11811 in
4 in	101.6 mm	4 mm	0.15748 in
5 in	127 mm	5 mm	0.19685 in
6 in	152.4 mm	6 mm	0.23622 in
7 in	177.8 mm	7 mm	0.27559 in
8 in	203.2 mm	8 mm	0.31496 in
9 in	228.6 mm	9 mm	0.35433 in
10 in	254 mm	10 mm	0.3937 in
11 in	279.4 mm	11 mm	0.43307 in
12 in	304.8 mm	12 mm	0.47244 in
13 in	330.2 mm	13 mm	0.51181 in
14 in	355.6 mm	14 mm	0.55118 in
15 in	381 mm	15 mm	0.59055 in
16 in	406.4 mm	16 mm	0.62992 in
17 in	431.8 mm	17 mm	0.66929 in
18 in	457.2 mm	18 mm	0.70866 in
19 in	482.6 mm	19 mm	0.74803 in
20 in	508 mm	20 mm	0.7874 in

Inches to Millimeters Conversion