Liters to Quarts
Convert liters to US quarts with the exact factor (1 L = 1.05669 qt), a quick reference table, and common kitchen and engine examples.
L to US qt formula
To convert liters (L) to US liquid quarts (qt), multiply by 1.05669. One US quart is 946.353 mL, so 1000 / 946.353 = 1.05669 qt.
Quick reference: L to US qt
Common values
0.5 L = 0.528 US qt
1 L = 1.06 US qt
2 L = 2.11 US qt
3 L = 3.17 US qt
5 L = 5.28 US qt
Worked example
Convert 1 L to quarts:
1 L × 1.05669 = 1.05669 qt
So 1 liter is about 1.06 US quarts.
Why convert L to US qt?
Quarts are used for oil, broth, and paint in the US, while liters are standard elsewhere. This conversion compares the two measures directly.
You can also use our calculator or read the paired guide US qt reference.
Frequently Asked Questions
How many quarts are in a liter?
1 L = 1.05669 US liquid quarts.
How many mL is one US quart?
1 US liquid quart = 946.353 mL.
How do I convert 2 liters to quarts?
2 L × 1.05669 = 2.11338 qt.
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Quick Summary
L to US qt uses a single exact factor. Use the formula above or the reference table for quick, accurate results.
Related Guide
Quarts to Liters: US Liquid Conversion for Cooking and Storage
Convert quarts to liters accurately for US cooking, food storage, and liquid volume. 1 US liquid quart equals 0.946353 liters.
Read Full Guide →More in Cooking & Baking
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Fluid Ounces to mL: Convert US Liquid Volume to Metric
Convert fluid ounces to mL with the exact US formula (1 fl oz = 29.5735 mL). Covers drinks, recipes, and skincare for everyday American use.
8 oz to mL: What a Standard US Cup Really Holds
Convert 8 oz to mL with the exact US formula. 8 fluid ounces equals 236.59 mL, the size of one US cup. See the math, uses, and common comparisons.
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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