Conversion formula

The conversion factor from centimeters to millimeters is 10, which means that 1 centimeter is equal to 10 millimeters:

1 cm = 10 mm

To convert 1800 centimeters into millimeters we have to multiply 1800 by the conversion factor in order to get the length amount from centimeters to millimeters. We can also form a simple proportion to calculate the result:

1 cm → 10 mm

1800 cm → L_(mm)

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

L_(mm) = 1800 cm × 10 mm

L_(mm) = 18000 mm

The final result is:

1800 cm → 18000 mm

We conclude that 1800 centimeters is equivalent to 18000 millimeters:

1800 centimeters = 18000 millimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 5.5555555555556E-5 × 1800 centimeters.

Another way is saying that 1800 centimeters is equal to 1 ÷ 5.5555555555556E-5 millimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one thousand eight hundred centimeters is approximately eighteen thousand millimeters:

1800 cm ≅ 18000 mm

An alternative is also that one millimeter is approximately zero times one thousand eight hundred centimeters.

Conversion table

centimeters to millimeters chart

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