Jigger to Milliliter Converter

About this calculator

A jigger is the standard bartending measure for spirits, historically 1.5 US fluid ounces — equal to 44.3603 millilitres — though some bar traditions use a 1 oz or 2 oz jigger instead. This converter moves between jiggers and millilitres in both directions, letting a recipe written in one unit be measured accurately with tools calibrated in the other.

It's a practical reference for bartenders, home mixologists, and recipe developers adapting cocktail recipes between US bar measures and the metric jiggers and shot glasses common outside the United States. Getting the ratio right matters in cocktail-making, where the balance between spirit, mixer, and modifier is often defined in precise fractions of a jigger.