Inches and Millimeters (mm) Converter

Quick Lookup (Round: 2). inches to mm

in	1/8	1/4	1/2	3/4	1	1.5	2	2.5	3	3.5	4	4.5	5	5.5	6	6.5	7	7.5	8	8.5	9	9.5	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37	38	39	40	41	42	43	44	45	46	47	48	49	50	60	70	80	90	100
mm	3.18	6.35	12.7	19.05	25.4	38.1	50.8	63.5	76.2	88.9	101.6	114.3	127	139.7	152.4	165.1	177.8	190.5	203.2	215.9	228.6	241.3	254	279.4	304.8	330.2	355.6	381	406.4	431.8	457.2	482.6	508	533.4	558.8	584.2	609.6	635	660.4	685.8	711.2	736.6	762	787.4	812.8	838.2	863.6	889	914.4	939.8	965.2	990.6	1016	1041.4	1066.8	1092.2	1117.6	1143	1168.4	1193.8	1219.2	1244.6	1270	1524	1778	2032	2286	2540

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How many millimeters are there in an inch?

There are 25.4 millimeters (mm) in 1 inch.

1 Inch (in) = 25.4 Millimeter (mm)

If you would like to convert from millimeters to inches and also get more information and access the tables please check millimeters to inches conversion.

How to convert inches to millimeters?

1 inch = 25.4 mm. To convert inches to mm, multiply the inch value by 25.4.

For example, to find out how many millimeters in an inch and a half, multiply 1.5 by 25.4, that makes 38.1 millimeters in 1.5 inches.

How to convert millimeters to inches?

1 mm = 0.0393701 inch. To convert mm to inches, multiply the millimeter value by 0.0393701 or divide by 25.4.

1 Millimeter (mm) = 0.0393701 Inch (in)

You may also use this length and distance units conversion calculator tool to convert between inches, millimeters and all other length and distance units.

What is an inch (in)?

Inch is an imperial and United States Customary length unit. 1 Inch is equal to 25.4 mm. The symbol is "in".

What is a millimeter (millimetre)?

Millimeter (mm) is a metric system length unit. 1 Millimeter is equal to 0.0393701 inch. The symbol is "mm".

Create Custom Conversion Table

Click "Create Table". Enter a "Start" value (5, 100 etc). Select an "Increment" value (0.01, 5 etc) and select "Accuracy" to round the result.

How to create custom conversion table?

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Increment:

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Conversion Table

Inch	Millimeter	Inch	Millimeter	Inch	Millimeter	Inch	Millimeter
1	25.4	26	660.4	51	1295.4	76	1930.4
2	50.8	27	685.8	52	1320.8	77	1955.8
3	76.2	28	711.2	53	1346.2	78	1981.2
4	101.6	29	736.6	54	1371.6	79	2006.6
5	127	30	762	55	1397	80	2032
6	152.4	31	787.4	56	1422.4	81	2057.4
7	177.8	32	812.8	57	1447.8	82	2082.8
8	203.2	33	838.2	58	1473.2	83	2108.2
9	228.6	34	863.6	59	1498.6	84	2133.6
10	254	35	889	60	1524	85	2159
11	279.4	36	914.4	61	1549.4	86	2184.4
12	304.8	37	939.8	62	1574.8	87	2209.8
13	330.2	38	965.2	63	1600.2	88	2235.2
14	355.6	39	990.6	64	1625.6	89	2260.6
15	381	40	1016	65	1651	90	2286
16	406.4	41	1041.4	66	1676.4	100	254
17	431.8	42	1066.8	67	1701.8	125	3175
18	457.2	43	1092.2	68	1727.2	150	381
19	482.6	44	1117.6	69	1752.6	175	4445
20	508	45	1143	70	1778	200	508
21	533.4	46	1168.4	71	1803.4	250	635
22	558.8	47	1193.8	72	1828.8	300	762
23	584.2	48	1219.2	73	1854.2	500	1270
24	609.6	49	1244.6	74	1879.6	750	1905
25	635	50	127	75	1905	1000	2540