# Inches to Millimeter Conversion (in to mm)

## 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 to Millimeter Conversions

### 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.

### Millimeter Definition

**Millimeter** is one the most commonly used units of length which equals to 1/1000^{th} 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*.

#### 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 Chart

Inches | Millimeter |
---|---|

1 in | 25.4 mm |

2 in | 50.8 mm |

3 in | 76.2 mm |

4 in | 101.6 mm |

5 in | 127 mm |

6 in | 152.4 mm |

7 in | 177.8 mm |

8 in | 203.2 mm |

9 in | 228.6 mm |

10 in | 254 mm |

11 in | 279.4 mm |

12 in | 304.8 mm |

13 in | 330.2 mm |

14 in | 355.6 mm |

15 in | 381 mm |

16 in | 406.4 mm |

17 in | 431.8 mm |

18 in | 457.2 mm |

19 in | 482.6 mm |

20 in | 508 mm |

21 in | 533.4 mm |

22 in | 558.8 mm |

23 in | 584.2 mm |

24 in | 609.6 mm |

25 in | 635 mm |

26 in | 660.4 mm |

27 in | 685.8 mm |

28 in | 711.2 mm |

29 in | 736.6 mm |

30 in | 762 mm |

31 in | 787.4 mm |

32 in | 812.8 mm |

33 in | 838.2 mm |

34 in | 863.6 mm |

35 in | 889 mm |

36 in | 914.4 mm |

37 in | 939.8 mm |

38 in | 965.2 mm |

39 in | 990.6 mm |

40 in | 1016 mm |

41 in | 1041.4 mm |

42 in | 1066.8 mm |

43 in | 1092.2 mm |

44 in | 1117.6 mm |

45 in | 1143 mm |

46 in | 1168.4 mm |

47 in | 1193.8 mm |

48 in | 1219.2 mm |

49 in | 1244.6 mm |

50 in | 1270 mm |

Inches | Millimeter |
---|---|

50 in | 1270 mm |

55 in | 1397 mm |

60 in | 1524 mm |

65 in | 1651 mm |

70 in | 1778 mm |

75 in | 1905 mm |

80 in | 2032 mm |

85 in | 2159 mm |

90 in | 2286 mm |

95 in | 2413 mm |

100 in | 2540 mm |

105 in | 2667 mm |

110 in | 2794 mm |

115 in | 2921 mm |

120 in | 3048 mm |

125 in | 3175 mm |

130 in | 3302 mm |

135 in | 3429 mm |

140 in | 3556 mm |

145 in | 3683 mm |

150 in | 3810 mm |

155 in | 3937 mm |

160 in | 4064 mm |

165 in | 4191 mm |

170 in | 4318 mm |

175 in | 4445 mm |

180 in | 4572 mm |

185 in | 4699 mm |

190 in | 4826 mm |

195 in | 4953 mm |

200 in | 5080 mm |

205 in | 5207 mm |

210 in | 5334 mm |

215 in | 5461 mm |

220 in | 5588 mm |

225 in | 5715 mm |

230 in | 5842 mm |

235 in | 5969 mm |

240 in | 6096 mm |

245 in | 6223 mm |

250 in | 6350 mm |

255 in | 6477 mm |

260 in | 6604 mm |

265 in | 6731 mm |

270 in | 6858 mm |

275 in | 6985 mm |

280 in | 7112 mm |

285 in | 7239 mm |

290 in | 7366 mm |

295 in | 7493 mm |