Inches to MM Conversion

inches to mm table

inch 1 2 3 4 5 6 7 8 9 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 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 500 1000
mm 25.4 50.8 76.2 101.6 127 152.4 177.8 203.2 228.6 254 279.4 304.8 330.2 355.6 381 406.4 431.8 457.2 482.6 508 533.4 558.8 584.2 609.6 635 660.4 685.8 711.2 736.6 762 787.4 812.8 838.2 863.6 889 914.4 939.8 965.2 990.6 1016 1041.4 1066.8 1092.2 1117.6 1143 1168.4 1193.8 1219.2 1244.6 1270 1295.4 1320.8 1346.2 1371.6 1397 1422.4 1447.8 1473.2 1498.6 1524 1549.4 1574.8 1600.2 1625.6 1651 1676.4 1701.8 1727.2 1752.6 1778 1803.4 1828.8 1854.2 1879.6 1905 1930.4 1955.8 1981.2 2006.6 2032 2057.4 2082.8 2108.2 2133.6 2159 2184.4 2209.8 2235.2 2260.6 2286 2311.4 2336.8 2362.2 2387.6 2413 2438.4 2463.8 2489.2 2514.6 2540 12700 25400
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Enter Inch
Enter Millimeter

How many mm in an inch?

There are 25.4 mm in an inch. One foot is defined as 304.8 millimeters and there are 12 inches in a foot, if you divide 304.8 by 12, that makes 25.4 mm in an inch.

Common conversions from inches to mm:

  • 1/4 inch = 6.35 mm
  • 1/2 inch = 12.7 mm
  • 3/4 inch = 19.05 mm
  • 1 inch = 25.4 mm
  • 2 inches = 50.8 mm
  • 5 inches = 127 mm
  • 10 inches = 254 mm

How to convert inches to mm?

1 Inch (in) is equal to 25.4 millimeters (mm). To convert inches to mm, multiply the inch value by 25.4.

For example, to find out how many millimeters there are in 12 inches, multiply 12 by 25.4, that makes 304.8 mm in 12 inches.

inches to mm formula

mm = inch * 25.4

What is an Inch?

Inch is an imperial and United States Customary systems unit of length, equal to one twelfth of a foot. 1 Inch = 25.4 mm. The symbol is "in".

What is a Millimeter?

Millimeter (millimetre) is a metric system unit of length, equal to 1/1000 of a meter (metre). 1 mm = 0.0393700787 inch. The symbol is "mm".

Please visit all length units conversion to convert all length units.

Create 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.