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MM to Inches converter

Type a number in millimetres to see it in inches straight away. 1 mm = 0.03937 in.

The same amount in every unit

Millimetres to inches chart

MillimetresInches
1 mm0.03937 in
2 mm0.07874 in
3 mm0.11811 in
4 mm0.15748 in
5 mm0.19685 in
6 mm0.23622 in
8 mm0.314961 in
10 mm0.393701 in
12 mm0.472441 in
MillimetresInches
15 mm0.590551 in
20 mm0.787402 in
25 mm0.984252 in
30 mm1.1811 in
40 mm1.5748 in
50 mm1.9685 in
75 mm2.9528 in
100 mm3.937 in

How to convert units

  1. Pick a type. Length, weight, temperature, volume, area, speed, data size or time.
  2. Type a number. Choose the units on both sides; the answer appears as you type.
  3. See every unit. The table shows your amount in all units at once.

Questions people ask

How many inches are in a millimetre?

1 millimetre = 0.03937 inches.

How do I convert millimetres to inches?

To convert millimetres to inches, multiply by 0.03937. For example, 12 mm = 0.472441 in.

How do I convert inches back to millimetres?

Use the inches to millimetres converter, or swap the units with the arrow button above.

How many centimetres are in an inch?

Exactly 2.54 centimetres.

How do I convert Celsius to Fahrenheit?

Multiply by 9/5 and add 32. For example 20 °C is 68 °F.

Is a gigabyte 1000 or 1024 megabytes?

Officially 1000 (GB). 1024 is a gibibyte (GiB), which some computers still label GB. Both are listed.

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