## Conversion formula

The conversion factor from meters to millimeters is 1000, which means that 1 meter is equal to 1000 millimeters:

1 m = 1000 mm

To convert 40 meters into millimeters we have to multiply 40 by the conversion factor in order to get the length amount from meters to millimeters. We can also form a simple proportion to calculate the result:

1 m → 1000 mm

40 m → L(mm)

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

L(mm) = 40 m × 1000 mm

L(mm) = 40000 mm

The final result is:

40 m → 40000 mm

We conclude that 40 meters is equivalent to 40000 millimeters:

40 meters = 40000 millimeters

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 2.5E-5 × 40 meters.

Another way is saying that 40 meters is equal to 1 ÷ 2.5E-5 millimeters.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that forty meters is approximately forty thousand millimeters:

40 m ≅ 40000 mm

An alternative is also that one millimeter is approximately zero times forty meters.

## Conversion table

### meters to millimeters chart

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

meters (m) millimeters (mm)
41 meters 41000 millimeters
42 meters 42000 millimeters
43 meters 43000 millimeters
44 meters 44000 millimeters
45 meters 45000 millimeters
46 meters 46000 millimeters
47 meters 47000 millimeters
48 meters 48000 millimeters
49 meters 49000 millimeters
50 meters 50000 millimeters