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Volume Converters

How much liquid fits in something — teaspoons, tablespoons, milliliters, liters, cups, pints, quarts and gallons.

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Background

What volume units measure

Volume units measure how much space a liquid takes up. These pages use US liquid units by default — the ones on American recipes, cartons and fuel pumps — because the UK Imperial gallon and fluid ounce are different sizes. Each page says which one it uses.

Guide

US, Imperial or metric: which one does your recipe mean?

American recipes, drink cans and fuel pumps use US customary units: the US cup (about 237 mL), the US fluid ounce (about 29.57 mL) and the US gallon (about 3.785 L). These pages use them by default.

Older British recipes and UK fuel-economy figures use Imperial units, which share the names but not the sizes: the Imperial gallon is about 20 percent larger and the Imperial fluid ounce about 4 percent smaller. Australia, New Zealand and most modern Canadian recipes use a 250 mL metric cup.

Spoons differ by country too. The US tablespoon is about 14.8 mL and the teaspoon about 4.93 mL; metric recipes, US nutrition labels and medicine round them to 15 mL and 5 mL. Australia uses a 20 mL tablespoon, four teaspoons rather than three.

Volume is not weight. A cup or a fluid ounce says how much room something takes up, and how much that weighs depends on the ingredient. Going from a volume to grams needs the ingredient’s density, which no fixed converter can supply.

Reference

Volume units on this site

Each unit expressed in liters, the base unit these converters calculate through.
Unit Symbol Equals in liters
Liters L 1 (base unit)
Milliliters mL 0.001
US teaspoons tsp 0.004928921594
US tablespoons tbsp 0.014786764781
US fluid ounces fl oz 0.029573529562
US cups cup 0.2365882365
US liquid pints pt 0.473176473
US liquid quarts qt 0.946352946
US liquid gallons gal 3.785411784

Every converter here calculates through liters, so a pair and its reverse always agree. The full list of factors and the standards behind them is on the methodology page.