UK pints
UK pints are volume units used in the United Kingdom for measuring liquids such as beer and milk. One UK pint is about 0.568 liters.
UK law requires draught beer and cider to be sold in pints, halves or thirds of a pint, and still allows milk in returnable bottles to be sold by the pint.
US liquid pints
A US liquid pint is a unit of volume in the United States to measure liquids. One US liquid pint is an eight of a US liquid gallon and about 0.473176 liters.