The basic metric unit of measure for measuring the capacity of a pitcher is liters (L).
you would use gallons to measure the capacity of a bathtub
You would use the metric unit "liters" to measure the capacity of a hot water tank.
milliliter
Litres.
gallons
Cubic kilometres.
cran
Litres
Fluid ounce is an old-fashioned unit, used to measure volume, or capacity.
you would use gallons to measure the capacity of a bathtub
Litres