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 645 millimeters into meters we have to multiply 645 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

645 mm → L_(m)

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

L_(m) = 645 mm × 0.001 m

L_(m) = 0.645 m

The final result is:

645 mm → 0.645 m

We conclude that 645 millimeters is equivalent to 0.645 meters:

645 millimeters = 0.645 meters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 meter is equal to 1.5503875968992 × 645 millimeters.

Another way is saying that 645 millimeters is equal to 1 ÷ 1.5503875968992 meters.

Approximate result

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

645 mm ≅ 0.645 m

An alternative is also that one meter is approximately one point five five times six hundred forty-five 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