England has converted to the SI system. There are several basic units:
metre m length
kilogram kg mass
second s time
ampere A electric current
kelvin K thermodynamic temperature
mole mol amount of substance
candela CD luminous intensity
If you are talking about the U.S system, the basic units are as above, and they are converted to feet, pounds, deg F, etc as needed.
The pound is the basic unit.
A cup
There is no individual unit in the Metric system that is near one inch in the English system, I'm afraid.
A cup
Liters
liters
The basic unit of length in the metric system is the meter. Grams are used to measure weight and liter is used to measure liquid capacity.
The fundamental unit that is the same in both the metric system and English system is the unit of mass, which is the pound (lb) in the English system and the kilogram (kg) in the metric system.
Gram is the basic unit of mass in the metric system. It is commonly used to measure the weight of objects and substances.
The base unit for time is the second.
THe SI system or metric system is based on meter (m) as the basic unit of measure.
In the metric system, the unit of force is the newton (N), while in the English system, the unit of force is the pound-force (lbf).