How Many Millimeters (mm) in an Inch?

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 in an inch?

There are 25.4 millimeters (mm) in 1 inch. 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 mm in an inch and a half.

1 Inch = 25.4 Millimeters

How many mm in 1/2 inch?

There are 12.7 mm in 1/2 inch.

How many mm in 1/3 inch?

There are 8.4667 mm in 1/3 inch.

How many mm in 1/4 inch?

There are 6.35 mm in 1/4 inch.

How many mm in 2/3 inch?

There are 16.9334 mm in 2/3 inch.

How many mm in 3/4 inch?

There are 19.05 mm in 3/4 inch.

How many mm in 1/8 inch?

There are 3.175 mm in 1/8 inch.

How many inches in a millimeter?

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

1 Millimeter = 0.0393701 Inch

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 Inch?

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

What is Millimeter?

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.