Conversion formula

The conversion factor from centimeters to inches is 0.39370078740157, which means that 1 centimeter is equal to 0.39370078740157 inches:

1 cm = 0.39370078740157 in

To convert 30.8 centimeters into inches we have to multiply 30.8 by the conversion factor in order to get the length amount from centimeters to inches. We can also form a simple proportion to calculate the result:

1 cm → 0.39370078740157 in

30.8 cm → L_(in)

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

L_(in) = 30.8 cm × 0.39370078740157 in

L_(in) = 12.125984251969 in

The final result is:

30.8 cm → 12.125984251969 in

We conclude that 30.8 centimeters is equivalent to 12.125984251969 inches:

30.8 centimeters = 12.125984251969 inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 0.082467532467532 × 30.8 centimeters.

Another way is saying that 30.8 centimeters is equal to 1 ÷ 0.082467532467532 inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that thirty point eight centimeters is approximately twelve point one two six inches:

30.8 cm ≅ 12.126 in

An alternative is also that one inch is approximately zero point zero eight two times thirty point eight centimeters.

Conversion table

centimeters to inches chart

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