Inches to Millimeter Conversion (in to mm)

Please enter inches (in) value of length unit to convert inches to millimeter.

1 in = 25.4 mm
» Millimeter to Inches
in: Inches, mm: Millimeter

How Many Millimeter in a Inch?

There are 25.4 millimeter in a inch.
1 Inch is equal to 25.4 Millimeter.
1 in = 25.4 mm

Inches Definition

An inch is a unit of measurement in the American Standard of measurements. Twelve inches equals one foot. The inch is further divided into smaller units. There are 16 units in one inch. Each unit being one-sixteenth of an inch (1/16th inch). These small 16 units are grouped into larger units called: 1/8th inch which consists of 2/16ths (2/16ths being mathematically reduced to 1/8th). Two of these 1/8th units are 1/4th inch (also commonly called a quarter of an inch). Two of these 1/4th divisions equal ½ inch (again, 2/4ths being mathematically reduced to ½). Next, three ¼ inch units equal ¾ (commonly termed “three quarters of an inch). And finally, 4 1/4th units equal 1 inch.

Convert Inches

Millimeter Definition

Millimeter is one the most commonly used units of length which equals to 1/1000th of a meter. It is a unit of SI applicable for measuring small distances and small length. According to SI rules, the unit symbol is mm.

Convert Millimeter

About in to mm Converter

This is a very easy to use inches to millimeter converter. First of all just type the inches (in) value in the text field of the conversion form to start converting in to mm, then select the decimals value and finally hit convert button if auto calculation didn't work. Millimeter value will be converted automatically as you type.

The decimals value is the number of digits to be calculated or rounded of the result of inches to millimeter conversion.

You can also check the inches to millimeter conversion chart below, or go back to inches to millimeter converter to top.

Inches to Millimeter Conversion Examples

1 in = 25.4 Millimeter

Example for 1.5 Inches: 
1.5 Inches = 1.5 (Inches) 
1.5 Inches = 1.5 x (25.4 Millimeter) 
1.5 Inches = 38.1 Millimeter 

Example for 3 Inches: 
3 Inches = 3 (Inches) 
3 Inches = 3 x (25.4 Millimeter) 
3 Inches = 76.2 Millimeter 

Example for 16 Inches: 
16 Inches = 16 (Inches) 
16 Inches = 16 x (25.4 Millimeter) 
16 Inches = 406.4 Millimeter 


Inches to Millimeter Conversion Chart

InchesMillimeter
1 in25.4 mm
2 in50.8 mm
3 in76.2 mm
4 in101.6 mm
5 in127 mm
6 in152.4 mm
7 in177.8 mm
8 in203.2 mm
9 in228.6 mm
10 in254 mm
11 in279.4 mm
12 in304.8 mm
13 in330.2 mm
14 in355.6 mm
15 in381 mm
16 in406.4 mm
17 in431.8 mm
18 in457.2 mm
19 in482.6 mm
20 in508 mm
21 in533.4 mm
22 in558.8 mm
23 in584.2 mm
24 in609.6 mm
25 in635 mm
26 in660.4 mm
27 in685.8 mm
28 in711.2 mm
29 in736.6 mm
30 in762 mm
31 in787.4 mm
32 in812.8 mm
33 in838.2 mm
34 in863.6 mm
35 in889 mm
36 in914.4 mm
37 in939.8 mm
38 in965.2 mm
39 in990.6 mm
40 in1016 mm
41 in1041.4 mm
42 in1066.8 mm
43 in1092.2 mm
44 in1117.6 mm
45 in1143 mm
46 in1168.4 mm
47 in1193.8 mm
48 in1219.2 mm
49 in1244.6 mm
50 in1270 mm
InchesMillimeter
50 in1270 mm
55 in1397 mm
60 in1524 mm
65 in1651 mm
70 in1778 mm
75 in1905 mm
80 in2032 mm
85 in2159 mm
90 in2286 mm
95 in2413 mm
100 in2540 mm
105 in2667 mm
110 in2794 mm
115 in2921 mm
120 in3048 mm
125 in3175 mm
130 in3302 mm
135 in3429 mm
140 in3556 mm
145 in3683 mm
150 in3810 mm
155 in3937 mm
160 in4064 mm
165 in4191 mm
170 in4318 mm
175 in4445 mm
180 in4572 mm
185 in4699 mm
190 in4826 mm
195 in4953 mm
200 in5080 mm
205 in5207 mm
210 in5334 mm
215 in5461 mm
220 in5588 mm
225 in5715 mm
230 in5842 mm
235 in5969 mm
240 in6096 mm
245 in6223 mm
250 in6350 mm
255 in6477 mm
260 in6604 mm
265 in6731 mm
270 in6858 mm
275 in6985 mm
280 in7112 mm
285 in7239 mm
290 in7366 mm
295 in7493 mm

Inches to Millimeter Common Values

  • 1 in = 25.4 mm
  • 1.5 in = 38.1 mm
  • 3 in = 76.2 mm
  • 2 in = 50.8 mm
  • 5 in = 127 mm
  • 0.25 in = 6.35 mm
  • 0.5 in = 12.7 mm
  • 6 in = 152.4 mm
  • 12 in = 304.8 mm
  • 0.125 in = 3.175 mm
  • 7 in = 177.8 mm
  • 0.75 in = 19.05 mm
  • 8 in = 203.2 mm
  • 10 in = 254 mm
  • 4 in = 101.6 mm
  • 1.25 in = 31.75 mm
  • 0.3 in = 7.62 mm
  • 13 in = 330.2 mm
  • 16 in = 406.4 mm
Recent Comments
john 2016-10-06 15:49:50

thank u

Ninja 2016-06-13 15:43:17

Nice to have auto calculate feature for inches to mm.

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