Quarts to Cups: Exact US Liquid Conversion
Convert US liquid quarts to cups with the exact 4-cups-per-quart relationship, a reference table, and the kitchen and canning sizes where it matters.
The Exact Quarts to Cups Relationship
A US liquid quart contains exactly 4 cups. The chain is exact: 1 quart = 2 pints and 1 pint = 2 cups, so 1 quart = 4 cups (32 fluid ounces). To convert quarts to cups, multiply by 4.
Our cups to ml converter gives the metric size of a cup, and our quarts to liters converter covers liters directly.
Quick Reference: Quarts to Cups
Common values
0.5 quart = 2 cups
1 quart = 4 cups
1.5 quarts = 6 cups
2 quarts = 8 cups
4 quarts = 16 cups
Worked Example
Convert 1.5 quarts to cups:
1.5 × 4 = 6 cups. So 1.5 US quarts equals exactly 6 cups.
Where Quarts and Cups Matter
Broth, milk, and paint are sold by the quart in the US, while recipes and measuring sets use cups. A quart of broth is 4 cups; a 2-quart carton of milk is 8 cups. A slow-cooker recipe calling for 6 cups of liquid is 1.5 quarts.
For the full set of US kitchen measures, see our US cooking measures guide.
Frequently Asked Questions
How many cups are in a quart?
One US liquid quart equals exactly 4 cups.
How do I convert quarts to cups?
Multiply the quarts by 4. For example, 1.5 quarts × 4 = 6 cups.
How many pints are in a quart?
Two. Since 1 quart = 2 pints and 1 pint = 2 cups, a quart is 4 cups.
How many milliliters are in a quart?
One US liquid quart is 946.353 mL, which is also 4 cups × 236.588 mL.
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Quick Summary
One US liquid quart equals exactly 4 cups (32 fl oz). Multiply quarts by 4 to get cups: 1 quart = 4 cups, 1.5 quarts = 6 cups, 2 quarts = 8 cups.
Related Guide
Cups, Tablespoons, and Teaspoons: Understanding US Cooking Measures
US recipes use cups, tablespoons, and teaspoons while the rest of the world uses milliliters and grams. Learn the exact volumes and how to convert them for any recipe.
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Disclaimer
Unit conversions on this site use internationally recognized, fixed conversion factors (for example, 1 inch = 2.54 cm, 1 pound = 0.45359237 kg, 1 °F = (°C × 9/5) + 32). They are provided for general, informational, and educational use. For applications where accuracy is critical — such as medical dosing, engineering, scientific research, trade, or legal compliance — always verify results against authoritative sources such as the U.S. National Institute of Standards and Technology (NIST) and the official International System of Units (SI) brochure, and follow any applicable local standards.
Exact Constants & Authoritative Sources
Every conversion on this page uses the fixed, internationally agreed constants below — drawn from NIST and the SI Brochure. No values are estimated or rounded as if exact. See the full list on our Sources & Standards page.
- EXACT1 US gallon (gal) = 3.785411784 litres (exact, 231 in³)
- EXACT1 US fluid ounce (fl oz) = 29.5735295625 mL (exact, 1/128 gal)
- EXACT1 US cup = 236.5882365 mL (exact, 8 fl oz)
- EXACT1 US pint (pt) = 473.176473 mL (exact, 16 fl oz)
- EXACT1 US quart (qt) = 946.352946 mL (exact, 32 fl oz)
- EXACT1 litre (L) = 1000 millilitres (definition)
Common Pitfalls & How to Avoid Them
US vs. Imperial (UK) cups
A US cup is 236.59 mL, but a UK/metric cup is 250 mL and an Imperial cup is ~284 mL. Recipes from different countries are not interchangeable drop-in.
Fluid ounce is volume, not mass
A US fl oz is 29.57 mL of volume. 1 fl oz of water ≈ 29.57 g, but 1 fl oz of honey or oil weighs more. Do not treat fluid ounces as grams.
Teaspoon/tablespoon sizes differ
1 US tbsp = 14.7868 mL; 1 US tsp = 4.92892 mL. Metric measuring spoons are 15 mL and 5 mL — close but not exact; for baking precision use weighed grams.
A unit-conversion reference site has no manufacturer-specific or device calibration parameters, so "layered tuning" does not apply here. The only real error-handling is input validation: the converter rejects non-numeric, empty, or out-of-range entries and shows a clear message, then falls back to exact constants above. No estimated or rounded figures are ever presented as exact.
Authoritative sources for this page
- NIST (U.S. National Institute of Standards and Technology) — NIST SP 330 — The International System of Units (SI), 2019 edition
- BIPM (International Bureau of Weights and Measures) — SI Brochure — The International System of Units (9th edition)
Last Updated 2026 | This article was reviewed for accuracy