# Cups to Quarts Converter URL: https://speedycalculator.com/calculators/conversion/cups-to-quarts/ Last updated: 2026-10-25 > Convert US cups (US cup) to US quarts (US qt): 1 US cup = 0.25 US qt, so multiply by 0.25 or divide by 4. Both fields are editable, so you can also type in US quarts and get US cups back. ## Inputs - US cups (US cup) ## Results - US quarts ## Formula ``` 1 US cup = 0.25 US qt 1 US qt = 4 US cup US qt = US cup × 0.25 ``` ## Explanation Four U.S. cups make a U.S. quart, and four quarts make a gallon. ### How to use the Cups to Quarts Converter - Type the number of US cups into the **US cups** field. Decimals such as 2 are fine. - Read the answer in **US quarts** – it updates as you type, with no button to press. - To convert the other way, type into **US quarts** and the US cups are recalculated. - 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 - Write down the value in US cups, for example **4 US cup**. - Multiply by the conversion factor 0.25 (because 1 US cup = 0.25 US qt). - 4 × 0.25 = **1 US qt**. - To go back from US quarts to US cups, divide by 0.25 – or multiply by 4. ### US cup to US qt conversion table US cupsUS quartsUS quartsUS cups1 US cup0.25 US qt1 US qt4 US cup2 US cup0.5 US qt2 US qt8 US cup4 US cup1 US qt5 US qt20 US cup6 US cup1.5 US qt10 US qt40 US cup8 US cup2 US qt20 US qt80 US cup10 US cup2.5 US qt50 US qt200 US cup12 US cup3 US qt100 US qt400 US cup16 US cup4 US qt1,000 US qt4,000 US cup ### 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. ## Worked example Inputs — US cups: 4 US cup. Results — **US quarts = 1 US qt**. ## FAQ **How many cups in a quart?** 4. **How many quarts is 10 cups?** 2.5 qt. **How many US quarts are in one US cup?** 1 US cup = 0.25 US qt. **How many US cups are in one US quart?** 1 US qt = 4 US cup. **How do I convert US cups to US quarts?** Multiply the number of US cups by 0.25. For example, 4 US cup × 0.25 = 1 US qt. **How do I convert US quarts back to US cups?** Divide by 0.25 (or multiply by 4), or simply type the value into the US quarts field above. **What is 10 US cup in US quarts?** 10 US cup = 2.5 US qt. **What is 2 US cup in US quarts?** 2 US cup = 0.5 US qt. **Is this conversion exact?** Yes. The factor comes from the official definitions of both units (NIST and the SI), so the only difference you may see is rounding in the last displayed digit. **Can I convert to other units on this page?** This page converts only between US cups and US quarts. To pick any volume unit, use the general volume converter linked under Related calculators. **What formula does the Cups to Quarts Converter use?** 1 US cup = 0.25 US qt. ## Sources - [NIST Special Publication 811 – Guide for the Use of the International System of Units](https://www.nist.gov/pml/special-publication-811) - [NIST Handbook 44 Appendix C – General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)