Cooking Measurement Converter

About this calculator

This converter switches recipe volumes between millilitres, US/metric cups, tablespoons and teaspoons, the units that differ most between American recipes and the rest of the world (a US cup is 240 ml, while some countries use a 250 ml cup). It uses standard kitchen conversion ratios (1 tablespoon = 3 teaspoons = 15 ml) rather than rounding loosely.

Home cooks following a US recipe with metric kitchen tools, bakers scaling a recipe up or down, and anyone translating a family recipe written in "cups" into a precise metric measurement use it to avoid the small errors that throw off baking in particular, where ratios matter more than in general cooking.