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 1040 centimeters into millimeters we have to multiply 1040 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

1040 cm → L_(mm)

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

L_(mm) = 1040 cm × 10 mm

L_(mm) = 10400 mm

The final result is:

1040 cm → 10400 mm

We conclude that 1040 centimeters is equivalent to 10400 millimeters:

1040 centimeters = 10400 millimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 9.6153846153846E-5 × 1040 centimeters.

Another way is saying that 1040 centimeters is equal to 1 ÷ 9.6153846153846E-5 millimeters.

Approximate result

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

1040 cm ≅ 10400 mm

An alternative is also that one millimeter is approximately zero times one thousand forty 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