A pint is a unit of volume commonly used to measure liquids, but its exact size varies depending on the measurement system:

• In the United States, a liquid pint is 16 US fluid ounces, which is approximately 473 milliliters

• The British imperial pint is larger, defined as 20 imperial fluid ounces, about 568 milliliters

• The imperial pint is roughly 20.1% larger than the US pint because the two systems use different definitions of fluid ounces and gallons

So, a pint can be either about 473 ml (US) or 568 ml (UK/Imperial), depending on the context.