US quarts and liters
The US liquid quart is a quarter of a US gallon: exactly 0.946352946 liters, or 2 pints. Motor oil, milk, stock and ice cream are sold in quarts in the US.
The liter is exactly one cubic decimeter, or 1/1000 of a cubic meter. Drinks, fuel, engine displacement and household liquids are sold by the liter in most countries.
Worked example
Convert 5 qt: 5 × 0.946352946 = 4.73176473, so 5 US quarts is 4.73176473 liters. Likewise 2 qt = 1.892705892 L.
Estimating in your head
Multiply by 0.95 for a quick figure; it is off by about 0.4%. For 5 qt that gives 4.75 L, against 4.73176 exactly.
Going the other way
To convert liters to US quarts, divide by 0.946352946 (or multiply by 1.05668820943). The swap button between the boxes opens that page.
How this works
L = qt × 0.946352946
1 qt = 0.000946352946 m³ and 1 L = 0.001 m³, both by definition, so the factor is their ratio: 0.946352946 exactly. Results drop binary floating-point noise beyond 15 significant digits and display at the precision you choose (6 significant figures by default). Copy result copies the full value.
Frequently asked
How many liters are in a US quart?
1 US quart = 0.946352946 liters, exactly. The value follows from the unit definitions, so it never changes.
How do I convert US quarts to liters?
Multiply by 0.946352946. For example, 2 qt × 0.946352946 = 1.892705892 L.
What is 10 qt in liters?
10 qt = 9.46352946 L. The table next to the converter lists more common values.
Is the result rounded?
Only on screen. The page computes with the exact definitions and removes floating-point noise past 15 significant digits; pick 3 to 12 significant figures, or use Copy result for the full value.
Sources
- NIST SP 811 Appendix B.8 — Factors for units listed alphabetically
- NIST Handbook 44 — Appendix C, General tables of units of measurement
- Wikipedia — United States customary units
Reviewed Oct 17, 2026 · test vectors fixtures/units/volume/quarts-to-liters/