Conversion formula

The conversion factor from kilometers to meters is 1000, which means that 1 kilometer is equal to 1000 meters:

1 km = 1000 m

To convert 400 kilometers into meters we have to multiply 400 by the conversion factor in order to get the length amount from kilometers to meters. We can also form a simple proportion to calculate the result:

1 km → 1000 m

400 km → L_(m)

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

L_(m) = 400 km × 1000 m

L_(m) = 400000 m

The final result is:

400 km → 400000 m

We conclude that 400 kilometers is equivalent to 400000 meters:

400 kilometers = 400000 meters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 meter is equal to 2.5E-6 × 400 kilometers.

Another way is saying that 400 kilometers is equal to 1 ÷ 2.5E-6 meters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred kilometers is approximately four hundred thousand meters:

400 km ≅ 400000 m

An alternative is also that one meter is approximately zero times four hundred kilometers.

Conversion table

kilometers to meters chart

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