# 42 millimeters in inches

## Conversion

42 millimeters is equivalent to 1.65354330708661 inches.

## Conversion formula How to convert 42 millimeters to inches?

We know (by definition) that: $1\mathrm{mm}\approx 0.039370079\mathrm{in}$

We can set up a proportion to solve for the number of inches.

$1 ⁢ mm 42 ⁢ mm ≈ 0.039370079 ⁢ in x ⁢ in$

Now, we cross multiply to solve for our unknown $x$:

$x\mathrm{in}\approx \frac{42\mathrm{mm}}{1\mathrm{mm}}*0.039370079\mathrm{in}\to x\mathrm{in}\approx 1.653543318\mathrm{in}$

Conclusion: $42 ⁢ mm ≈ 1.653543318 ⁢ in$ ## Conversion in the opposite direction

The inverse of the conversion factor is that 1 inch is equal to 0.604761904761905 times 42 millimeters.

It can also be expressed as: 42 millimeters is equal to $\frac{1}{\mathrm{0.604761904761905}}$ inches.

## Approximation

An approximate numerical result would be: forty-two millimeters is about one point six four inches, or alternatively, a inch is about zero point six zero times forty-two millimeters.

## Footnotes

 The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.