Meters
The base unit of mass is the kilogram.
It is a measuring tape which is calibrated in metric units.
meter meter
It is measured in seconds (s).
The 'meter' is the metric unit of any length or distance, no matter what direction.
Meters
kilometres
meter
meter
The metric unit for distance/length is the metre, but what kind of formula are you asking for?
The metre (meter in the USA) is the base unit of length in the metric system. It is equal to the distance light travels in a vacuum in a time interval of 1/299792458 of a second.
The metric unit for distance is the metre which is roughly 39.4 inches.