Length conversion
42 mm to in
1.6535 in
42 millimetres = 1.6535 inches. Exact factor: in = mm ÷ 25.4.
Live converter
Edit either field — the other updates instantly. Type decimal values like 38.4.
The formula
in = mm ÷ 25.4
Worked example: 42 × 0.0393700787 = 1.6535 in.
Values near 42 mm
| mm | in |
|---|---|
| 39 | 1.5354 |
| 40 | 1.5748 |
| 41 | 1.6142 |
| 42this page | 1.6535 |
| 43 | 1.6929 |
| 44 | 1.7323 |
| 45 | 1.7717 |
Frequently asked
How do you convert millimetres to inches?
Apply the formula in = mm ÷ 25.4. Enter any value in the live converter above and the result updates as you type.
What is 42 mm in in?
42 mm equals 1.6535 in. The reference table below shows the values immediately around 42 mm.
Is this conversion exact?
Yes. Hardware, drill bits and camera lenses are specified in millimetres almost everywhere, including in the US.