A pint contains different amounts of fluid ounces depending on the measurement system:

• In the United States, 1 liquid pint equals 16 fluid ounces

• In the United Kingdom (Imperial system), 1 pint equals 20 fluid ounces

So, if you are using US measurements, a pint is 16 ounces, while in the UK, a pint is larger at 20 ounces.