Cups to Quarts Converter

Four U.S. cups make a U.S. quart, and four quarts make a gallon.

How to use the Cups to Quarts Converter

1. Type the number of US cups into the US cups field. Decimals such as 2 are fine.
2. Read the answer in US quarts – it updates as you type, with no button to press.
3. To convert the other way, type into US quarts and the US cups are recalculated.
4. Press Copy results to copy both values with the page title, or Copy link to share this exact conversion.

This page converts only US cup ⇄ US qt. Need a different unit? Use the general volume converter, where you can choose any “from” and “to” unit.

How it works

Both units measure volume, so they are always in the same ratio: one US cup equals 0.25 US quarts. The calculator multiplies the number of US cups you type by 0.25 to give US quarts, and when you type into the US quarts field it divides by the same factor to give US cups. Because the ratio never changes, doubling the US cups always doubles the US quarts. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation).

How to convert US cups to US quarts

1. Write down the value in US cups, for example 4 US cup.
2. Multiply by the conversion factor 0.25 (because 1 US cup = 0.25 US qt).
3. 4 × 0.25 = 1 US qt.
4. To go back from US quarts to US cups, divide by 0.25 – or multiply by 4.

US cup to US qt conversion table

What is a US cup?

The U.S. customary cup is 8 U.S. fluid ounces, about 236.6 mL. Recipes from Australia, Canada and New Zealand often use the 250 mL metric cup instead.

What is a US quart?

A U.S. quart is a quarter of a gallon, about 946 mL. Engine oil, ice cream and soups are often sold by the quart.

Common mistakes to avoid

Mixing u.s. and uk gallons, pints and fluid ounces, assuming a cup is always 250 ml, and treating volume and weight as interchangeable for anything except water.