mm to inches
Convert millimetres to inches, with fractions for tools and DIY.
25 mm is
0.984252 in
In every unit
- Centimetres2.5 cm
- Metres0.025 m
- Kilometres0.000025 km
- Inches0.984252 in
- Feet0.082021 ft
- Yards0.0273403 yd
- Miles0.0000155343 mi
- Nautical miles0.0000134989 nmi
Show workings
- Conversion factor1 mm = 0.039370079 in
- Result25 × 0.039370079 = 0.984252 in
How to convert millimetres to inches
For drill bits, screws, timber, tyres and tool sizes where metric and imperial get mixed.
Divide the millimetres by 25.4: an inch is exactly 25.4 mm.
Quick estimate: About 25 mm to the inch, so 6 mm is roughly a quarter of an inch.
Worked example
6 millimetres is 0.23622 in (6 × 0.039370079).
Millimetres to inches chart
| mm | in |
|---|---|
| 1 | 0.0393701 in |
| 2 | 0.0787402 in |
| 3 | 0.11811 in |
| 5 | 0.19685 in |
| 6 | 0.23622 in |
| 8 | 0.314961 in |
| 10 | 0.393701 in |
| 12 | 0.472441 in |
| 13 | 0.511811 in |
| 15 | 0.590551 in |
| 19 | 0.748031 in |
| 20 | 0.787402 in |
| 25 | 0.984252 in |
| 50 | 1.9685 in |
| 100 | 3.93701 in |
More conversions
Questions
How many inches is 6 mm?
6 millimetres is 0.23622 in.
How many inches is 19 mm?
19 millimetres is 0.748031 in.
How do I get the answer as a fraction of an inch?
For sockets, spanners and bolts, the socket size converter shows the nearest fraction (like 9/16″) and whether metric and imperial sizes swap.