Convert millimetres (mm) to inches (in).
Edit either value. Decimals and scientific notation supported.
Whole feet; inches from 0 to less than 12. Non-negative values.
No units found. Try a name or symbol.
Feet + inches
Whole feet; inches from 0 to less than 12. Non-negative values.
No units found. Try a name or symbol.
Feet + inches
1 mm ≈ 0.03937007874 in
Precision changes displayed rounding, not calculation accuracy.
in = mm ÷ 25.4in = mm ÷ 25.4
Divide the mm reading by 25.4.
25.4 mm ≈ 1 in
25.4 ÷ 25.4 ≈ 1
1000 mm ≈ 39.37007874 in
1000 ÷ 25.4 ≈ 39.37007874
A decimal inch is a fraction of one inch: 0.5 is 1/2 inch and 0.25 is 1/4 inch. This tool keeps decimal results rather than rounding them automatically to ruler marks.
Fixed reference · Millimetre to Inch
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
| Millimetre (mm) | Inch (in) |
|---|---|
| 0 | 0 |
| 0.1 | 0.003937007874 |
| 0.5 | 0.01968503937 |
| 1 | 0.03937007874 |
| 2 | 0.07874015748 |
| 5 | 0.1968503937 |
| 10 | 0.3937007874 |
| 25 | 0.9842519685 |
| 50 | 1.968503937 |
| 100 | 3.937007874 |
| 1000 | 39.37007874 |
m · km · cm and more
kg · g · mg and more
m² · km² · cm² and more
L · mL · m³ and more
°C · °F · K and more
m/s · km/h · mph and more
Pa · kPa · MPa and more
J · kJ · MJ and more
W · kW · MW and more
B · b · kB and more
px · pt · pc and more
s · ms · µs and more
° · rad · gon and more
Hz · kHz · MHz and more
N · kN · lbf and more
bit/s · kbit/s · Mbit/s and more
L/100 km · km/L · mpg (US) and more
kg/m³ · g/cm³ · g/L and more
No matching category. Try “length”, “pounds”, “GB” or “temperature”.