80 millimeters in inches

Conversion formula
How to convert 80 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.

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

Conclusion: 80 ⁢ mm ≈ 3.14960632 ⁢ in

Conversion in the opposite direction

The inverse of the conversion factor is that 1 inch is equal to 0.3175 times 80 millimeters.

It can also be expressed as: 80 millimeters is equal to $\frac{1}{\mathrm{0.3175}}$ inches.

Approximation

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