## Unit Converter

## Conversion formula

The conversion factor from centimeters to kilometers is 1.0E-5, which means that 1 centimeter is equal to 1.0E-5 kilometers:

1 cm = 1.0E-5 km

To convert 40 centimeters into kilometers we have to multiply 40 by the conversion factor in order to get the length amount from centimeters to kilometers. We can also form a simple proportion to calculate the result:

1 cm → 1.0E-5 km

40 cm → L_{(km)}

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

L_{(km)} = 40 cm × 1.0E-5 km

L_{(km)} = 0.0004 km

The final result is:

40 cm → 0.0004 km

We conclude that **40 centimeters is equivalent to 0.0004 kilometers**:

40 centimeters = 0.0004 kilometers

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case **1 kilometer is equal to 2500 × 40 centimeters**.

Another way is saying that *40 centimeters is equal to 1 ÷ 2500 kilometers*.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that **forty centimeters is approximately zero kilometers**:

40 cm ≅ 0 km

An alternative is also that *one kilometer is approximately two thousand five hundred times forty centimeters*.

## Conversion table

### centimeters to kilometers chart

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

centimeters (cm) | kilometers (km) |
---|---|

41 centimeters | 0 kilometers |

42 centimeters | 0 kilometers |

43 centimeters | 0 kilometers |

44 centimeters | 0 kilometers |

45 centimeters | 0 kilometers |

46 centimeters | 0 kilometers |

47 centimeters | 0 kilometers |

48 centimeters | 0 kilometers |

49 centimeters | 0 kilometers |

50 centimeters | 0.001 kilometers |