US quarts to liters converter

US liquid quarts are common in liquid capacities and recipes. A liquid quart differs from a dry quart and from an imperial quart. Use this direction when the original amount is explicitly a US liquid measure, then round for the markings on your measuring container.

One US quart is exactly 0.946352946 liters. The US liquid quart is a quarter of a US gallon, exactly 0.946352946 L.

Multiply the number of US quarts by 0.946352946. For example, 4 qt × 0.946352946 = 3.785412 L. To go the other way, divide by 0.946352946.

Multiply by 0.95. That is 0.4% high of the exact factor 0.946352946, so 4 qt comes out as 3.8 L instead of 3.7854.

Accuracy depends on your inputs and the method's assumptions. Decimal arithmetic uses 50 significant digits, but estimates, numerical methods and source data can be less precise; the displayed rounding does not remove those limits. It is checked against 3 worked examples whose answers come from independent sources; for example, “4 qt to L” is checked against Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions).

NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B; NIST Handbook 44, Appendix C: General tables of units of measurement; BIPM, The International System of Units (SI Brochure), 9th edition.