The butt was a measure of liquid volume equalling two hogsheads. This equated to 108 imperial gallons (490 l) for ale or 126 imperial gallons (570 l) for wine (also known as a pipe).

conversion table

The pint (/ˈpaɪnt/); symbol pt, sometimes abbreviated as "p") is a unit of volume or capacity in both the imperial and United States customary measurement systems.

In the United States, the liquid pint is legally defined as one-eighth of a liquid gallon of precisely 231 cubic inches.

1 US liquid pint	=	1⁄8	US liquid gallon
	=	1⁄2	US liquid quart
	=	2	US cups
	=	4	US fluid gills
	=	16	US fluid ounces
	=	128	US fluid drams
	=	28.875	cubic inches (exactly)
	=	473.176473	millilitres (exactly) ≈ 473 ml
	≈	0.83267418463	imperial pints
	≈	0.85936700738	US dry pints
	≈	the volume of 1.041 lb (472 g) of water at 62 °F (16.7 °C)

conversion table