How many kilometers are in a meter

This definition was slightly modified in to reflect changes in the definition of the second. In , the meter was again redefined, this time in terms of a certain number of wavelengths of a certain emission line of krypton The current definition of the meter is effectively the same as the definition that was adopted in , with slight modifications due to the change in definition of the second.

Current use: Being the SI unit of length, the meter is used worldwide in many applications such as measuring distance, height, length, width, etc. All In One Unit Converter. Unit Converter. Please, choose a physical quantity, two units, then type a value in any of the boxes above. Find other conversions here:. A kilometer km is a decimal multiple of the meter, the International System of Units SI unit of length, approximately equivalent to A kilometer is now used officially for expressing distances between geographical places on land in most of the world with notable exceptions being the United States and the United Kingdom.

Using this converter you can get answers to questions like: How many kilometers are there in a meter? A meter is equal to how many kilometers? Go ahead and convert your own value of km to m in the converter below. If you wish you can reverse the conversion by using the converter for meters to kilometres.

A kilometre US spelling: kilometer; symbol: km is a unit of length that is equal to 1, metres, the current International System of Units SI base unit of length. The kilometre is part of the metric system. A corresponding unit of area is the square kilometre and a corresponding unit of volume is the cubic kilometre. See all conversions for kilometres here.

The metre, or meter US , is a measure of length. It is the basic unit of length in the metric system and in the International System of Units SI , used around the world for general and scientific purposes.