Convert a measure

One measure in the other system of units, and the tool that pours it. The arithmetic is the site's own - the ounce every recipe is converted with, and the sizes the measures reference prints - so the number here and the number beside a recipe are never two opinions about the same pour.

Written the way a recipe writes one: 1 1/2 oz, 50 ml, a quarter of a litre, 2 dashes. A measure has no size to convert only when the amount is not a number at all - the answer below says which of those it is instead of inventing one.

Left to itself, a measure is answered in the system it was not written in: millilitres in ounces and ounces in millilitres.

The sizes the reference prints

The tools themselves →

One click from an answer: each size as the measures page writes it, asked in the other system, with the tool that holds it. A size already written in the units you are reading it in is not converted here - a jigger is made to those two sizes, and the reference says what the difference between them is.