No, it is an imperial unit of measure.
A litre is a metric unit. A quart is two pints - an imperial unit.
no, Acres is an Imperial Unit for the measure of area. The metric unit for area is the square meter.
no, it cant, because a kilometre is a metric unit.
I'm guessing by customary, you mean imperial. if so inches are customary/imperial
No, a foot is not a metric measurement. Metric measurements of length would include millimeter, centimeter, meter, and kilometer.
The litre. It's metric. They went metric in the 60s.
Gallons are an Imperial unit of measure.
Sort of. The second (s) is the base SI unit & a millisecond (ms) is a derived unit. The second was also part of the Imperial system.See related link below for more info
A gallon is a unit of volume. A metric ton is a unit of weight. The two are not mutually related. You would need to know the substance being measured/weighed before that question could be answered.
Acre is an imperial measurment. Hectacre would be an analogous metric measurment.
A teaspoon is a standard unit of measurement, commonly used in the United States and other countries following the imperial system. It is not a metric unit.