Pints to Fluid ounces

About Pints and Fluid ounces

Pints (pt): Two US cups (473 mL), or in the UK an imperial pint of 568 mL (about 20% larger); pints date to medieval English measurement, with the modern US definition fixed by the 1707 wine gallon. Common uses: Beer and other beverages (a US pint of beer is 16 fl oz; a UK pint is 20 fl oz), ice cream containers, and some recipe measurements.

Fluid ounces (fl oz): 1/128 of a US gallon, or 29.5735 mL; the UK imperial fluid ounce is slightly different at 28.4131 mL, a remnant of pre-metric British measurement. Common uses: US beverage container sizes (a 12-oz soda can), US liquid recipe measurements, and UK pub measures for spirits (where a 'single' is 25 or 35 mL but historically tracked from imperial fl oz).

How the conversion works

Volume conversions use US customary measure (the cup, fluid ounce, and gallon are US definitions, not imperial). 1 US cup = 236.588 mL, 1 US gallon = 3.785411784 L.

The exact relationship is fluid ounces = pints × 16, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.

When this conversion matters

Converting between pints and fluid ounces comes up wherever volume measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.