420 millimeters in meters

Result

The conversion result is: 420 millimeters is equivalent to 0.42 meters.^[1]

Conversion formula
How to convert 420 millimeters to meters?

We know (by definition) that: 1 mm = 0.001 m.

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

1 mm / 420 mm = 0.001 m / x m

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

x m = (420 mm / 1 mm) * 0.001 m → x m = 0.42 m

Conclusion:

420 mm = 0.42 m

Conversion in the opposite direction

The inverse of the conversion factor is that 1 meter is equal to 2.38095238095238 times 420 millimeters.

It can also be expressed as: 420 millimeters is equal to 1 / 2.38095238095238 meters.

Approximation

An approximate numerical result would be: four hundred and twenty millimeters is about zero meters, or alternatively, a meter is about two point three seven times four hundred and twenty millimeters.