Conversion formula

The conversion factor from millimeters to meters is 0.001, which means that 1 millimeter is equal to 0.001 meters:

1 mm = 0.001 m

To convert 420 millimeters into meters we have to multiply 420 by the conversion factor in order to get the length amount from millimeters to meters. We can also form a simple proportion to calculate the result:

1 mm → 0.001 m

420 mm → L_(m)

Solve the above proportion to obtain the length L in meters:

L_(m) = 420 mm × 0.001 m

L_(m) = 0.42 m

The final result is:

420 mm → 0.42 m

We conclude that 420 millimeters is equivalent to 0.42 meters:

420 millimeters = 0.42 meters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 meter is equal to 2.3809523809524 × 420 millimeters.

Another way is saying that 420 millimeters is equal to 1 ÷ 2.3809523809524 meters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty millimeters is approximately zero point four two meters:

420 mm ≅ 0.42 m

An alternative is also that one meter is approximately two point three eight one times four hundred twenty millimeters.

Conversion table

millimeters to meters chart

For quick reference purposes, below is the conversion table you can use to convert from millimeters to meters