## Unit Converter

## Conversion formula

The conversion factor from centimeters to decimeters is 0.1, which means that 1 centimeter is equal to 0.1 decimeters:

1 cm = 0.1 dm

To convert 21.5 centimeters into decimeters we have to multiply 21.5 by the conversion factor in order to get the length amount from centimeters to decimeters. We can also form a simple proportion to calculate the result:

1 cm → 0.1 dm

21.5 cm → L_{(dm)}

Solve the above proportion to obtain the length *L* in decimeters:

L_{(dm)} = 21.5 cm × 0.1 dm

L_{(dm)} = 2.15 dm

The final result is:

21.5 cm → 2.15 dm

We conclude that **21.5 centimeters is equivalent to 2.15 decimeters**:

21.5 centimeters = 2.15 decimeters

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case **1 decimeter is equal to 0.46511627906977 × 21.5 centimeters**.

Another way is saying that *21.5 centimeters is equal to 1 ÷ 0.46511627906977 decimeters*.

## Approximate result

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

21.5 cm ≅ 2.15 dm

An alternative is also that *one decimeter is approximately zero point four six five times twenty-one point five centimeters*.

## Conversion table

### centimeters to decimeters chart

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

centimeters (cm) | decimeters (dm) |
---|---|

22.5 centimeters | 2.25 decimeters |

23.5 centimeters | 2.35 decimeters |

24.5 centimeters | 2.45 decimeters |

25.5 centimeters | 2.55 decimeters |

26.5 centimeters | 2.65 decimeters |

27.5 centimeters | 2.75 decimeters |

28.5 centimeters | 2.85 decimeters |

29.5 centimeters | 2.95 decimeters |

30.5 centimeters | 3.05 decimeters |

31.5 centimeters | 3.15 decimeters |