Convert Inches to MM

Convert Inches to MM Automatically

To convert Inches to MM, enter the number of inches to be converted into the inches box below.

Inches:
Inches (in)
Results:
Micrometers (µm)	0
Millimeters (mm)	0
Centimeters (cm)	0
Meters (m)	0
Kilometers (km)	0
Feet (ft)	0
Yards (yd)	0
Rods (rd)	0
Miles (mi)	0

Convert Inches to MM Manually

This chart allows users to convert Inches to MM manually. For example, the chart below shows that 21 inches is equal to 533.4 mm.

Inches	Millimeters
1	25.4
2	50.8
3	76.2
4	101.6
5	127.0
6	152.4
7	177.8
8	203.2
9	228.6
10	254.0
11	279.4
12	304.8
13	330.2
14	355.6
15	381.0
16	406.4
17	431.8
18	457.2
19	482.6
20	508.0
21	533.4
22	558.8
23	584.2
24	609.6
25	635.0
26	660.4
27	685.8
28	711.2
29	736.6
30	762.0
31	787.4
32	812.8
33	838.2
34	863.6
35	889.0
36	914.4
37	939.8
38	965.2
39	990.6
40	1016.0
41	1041.4
42	1066.8
43	1092.2
44	1117.6
45	1143.0
46	1168.4
47	1193.8
48	1219.2
49	1244.6
50	1270.0