Conversion formula

The conversion factor from meters to kilometers is 0.001, which means that 1 meter is equal to 0.001 kilometers:

1 m = 0.001 km

To convert 640 meters into kilometers we have to multiply 640 by the conversion factor in order to get the length amount from meters to kilometers. We can also form a simple proportion to calculate the result:

1 m → 0.001 km

640 m → L_(km)

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

L_(km) = 640 m × 0.001 km

L_(km) = 0.64 km

The final result is:

640 m → 0.64 km

We conclude that 640 meters is equivalent to 0.64 kilometers:

640 meters = 0.64 kilometers

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer is equal to 1.5625 × 640 meters.

Another way is saying that 640 meters is equal to 1 ÷ 1.5625 kilometers.

Approximate result

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

640 m ≅ 0.64 km

An alternative is also that one kilometer is approximately one point five six three times six hundred forty meters.

Conversion table

meters to kilometers chart

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