What are the metric units of measurement?

The following table lists the metric base units of measurement and their symbols:

Measurement Metric Base Unit   length   meter (m)   mass   gram (g)   time   second (s)   current   ampere (A)   thermodynamic temperature   kelvin (K)   amount of substance   mole (mol)   luminous intensity   candela (cd)   plane angle   radian (rad)   solid angle   steradian (sr)

Note that the metric symbols, or abbreviations, are neither italicized nor capitalized (except ampere (A) and kelvin (K) which are derived from proper names). The symbols are not followed by a period and do not change in plural form.

The metric symbol is used only when it follows a number; otherwise, it is spelled out:

The 1500 m race, slightly under 1 mile in length, is one

of the most exciting events in track and field. 

but 

International track meets use meters instead of yards as the

standard unit of distance measure.