## 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 21 centimeters into inches we have to multiply 21 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

21 cm → L(in)

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

L(in) = 21 cm × 0.39370078740157 in

L(in) = 8.2677165354331 in

The final result is:

21 cm → 8.2677165354331 in

We conclude that 21 centimeters is equivalent to 8.2677165354331 inches:

21 centimeters = 8.2677165354331 inches

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 0.12095238095238 × 21 centimeters.

Another way is saying that 21 centimeters is equal to 1 ÷ 0.12095238095238 inches.

## Approximate result

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

21 cm ≅ 8.268 in

An alternative is also that one inch is approximately zero point one two one times twenty-one 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

centimeters (cm) inches (in)
22 centimeters 8.661 inches
23 centimeters 9.055 inches
24 centimeters 9.449 inches
25 centimeters 9.843 inches
26 centimeters 10.236 inches
27 centimeters 10.63 inches
28 centimeters 11.024 inches
29 centimeters 11.417 inches
30 centimeters 11.811 inches
31 centimeters 12.205 inches