Inches to millimetres chart
| Inches | Millimetres |
|---|---|
| 0.125 in | 3.175 mm |
| 0.25 in | 6.35 mm |
| 0.5 in | 12.7 mm |
| 0.75 in | 19.05 mm |
| 1 in | 25.4 mm |
| 1.5 in | 38.1 mm |
| 2 in | 50.8 mm |
| Inches | Millimetres |
|---|---|
| 3 in | 76.2 mm |
| 4 in | 101.6 mm |
| 5 in | 127 mm |
| 6 in | 152.4 mm |
| 8 in | 203.2 mm |
| 10 in | 254 mm |
| 12 in | 304.8 mm |
How to convert units
- Pick a type. Length, weight, temperature, volume, area, speed, data size or time.
- Type a number. Choose the units on both sides; the answer appears as you type.
- See every unit. The table shows your amount in all units at once.
Questions people ask
How many millimetres are in a inch?
1 inch = 25.4 millimetres.
How do I convert inches to millimetres?
To convert inches to millimetres, multiply by 25.4. For example, 3 in = 76.2 mm.
How do I convert millimetres back to inches?
Use the millimetres to inches 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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