# US quarts to liters converter

> Convert US quarts to liters (quarts to liters) with the exact factor, a conversion chart and worked steps.

Interactive version: https://www.calcopenly.com/conversion/quarts-to-liters
Subject: Unit converters

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, so 4 qt is 3.785412 L. To convert quarts to liters, multiply by 0.946352946; to convert back, multiply by 1.0566882094.

The US liquid quart is a quarter of a US gallon, exactly 0.946352946 L. Because both units are defined exactly, the factor above is exact and the results here carry no conversion error.

## Inputs

- **US quarts (qt)**

## Results

- Liters (L) — main result
- Conversion
- 1 L in US quarts (qt)

## Formula

$$
\text{liters} = \text{US quarts} \times 0.946352946
$$

## Worked examples

### 4 qt to L

- US quarts (qt): 4 qt
- **Liters: 3.785411784 L**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 2 qt to L

- US quarts (qt): 2 qt
- **Liters: 1.892705892 L**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 12 qt to L

- US quarts (qt): 12 qt
- **Liters: 11.356235352 L**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

## Questions

### When would I convert quarts to liters?

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.

### How many liters are in a US quart?

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

### How do you convert quarts to liters?

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.

### How can I estimate quarts to liters without a calculator?

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.

### How accurate is the US quarts to liters converter?

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).

### Where does the method come from?

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.

## Sources

- [NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44, Appendix C: General tables of units of measurement](https://www.nist.gov/pml/weights-and-measures/publications/nist-handbooks/handbook-44)
- [BIPM, The International System of Units (SI Brochure), 9th edition](https://www.bipm.org/en/publications/si-brochure)