A hin is a Biblical unit of measurement that is approximately equal to 1 gallon or 3.8 liters.

A hin is equal to a person's minimum daily requirement of water.

The hin is used to measure water, oil, and wine but never in quantities over a hin.  Instead fractions of a hin are recorded.

The hin is mentioned only in Exodus, Leviticus, Numbers, and Ezekiel and thus are used most often in reference to drink offerings at the temple.