Convert millimetres to inchs
1 mm = 0.0393700787402 in — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.039 370 078 740 2in
As a fraction: 5/127
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1 mm = 0.0393700787402 in
Show this value in all 8 typography length units
- Metres m 0.001
- Millimetres mm 1
- Inchs in 0.039 370 078 740 2
- CSS pixels px 3.779 527 559 06
- PostScript points pt 2.834 645 669 29
- Picas pc 0.236 220 472 441
- Quarter millimetres Q 4
- Twips twip 56.692 913 385 8
Every row is Millimetre (mm) converted through the meter, in exact rational arithmetic.
How to convert millimetres to inchs
Multiply the number of millimetres by 0.0393700787402 to get inchs.
Millimetre to Inch conversion table
| Millimetres (mm) | Inchs (in) |
|---|---|
| 1 mm | 0.039 370 079 |
| 2 mm | 0.078 740 157 |
| 3 mm | 0.118 110 24 |
| 5 mm | 0.196 850 39 |
| 10 mm | 0.393 700 79 |
| 20 mm | 0.787 401 57 |
| 25 mm | 0.984 251 97 |
| 50 mm | 1.968 503 9 |
| 100 mm | 3.937 007 9 |
| 250 mm | 9.842 519 7 |
| 500 mm | 19.685 039 |
| 1000 mm | 39.370 079 |
Inch to Millimetre conversion table
| Inchs (in) | Millimetres (mm) |
|---|---|
| 1 in | 25.4 |
| 2 in | 50.8 |
| 3 in | 76.2 |
| 5 in | 127 |
| 10 in | 254 |
| 20 in | 508 |
| 25 in | 635 |
| 50 in | 1270 |
| 100 in | 2540 |
| 250 in | 6350 |
| 500 in | 12 700 |
| 1000 in | 25 400 |
Frequently asked
How many inchs are in a millimetre?
One millimetre equals 0.03937007874 inchs (mm → in). That figure is exact, not rounded.
How do you convert millimetres to inchs?
Multiply the number of millimetres by 0.0393700787402 to get inchs.
What is 1 in in millimetres?
One inch is 25.4 millimetres.
What is 10 mm in in?
10 mm = 0.393 700 79 in.