Second.
The unit that measures distance in the metric system is the meter.
The SI unit of weight is the newton (N), which is a Derived Unit.
Time is measured in seconds in the metric system. It is the base unit for time, with larger units such as minutes and hours being multiples of seconds. There are also smaller units such as milliseconds and microseconds that are used to measure shorter periods of time.
The standard unit that is the same in all systems of units is the second, which is the base unit for measuring time.
Meter (m) - measures length or distance. Kilogram (kg) - measures mass. Second (s) - measures time. Ampere (A) - measures electric current.