Quarts to Liters (qt to L) Converter
Use this quarts to liters converter to instantly convert qt to L with accurate results. Enter a volume in quarts, adjust decimal precision, and get the equivalent liters value immediately.
This converter uses the formula L = qt × 0.946353 for US liquid quarts. One quart is just under one liter — the conversion you need when adapting US recipes for metric measurements or comparing liquid quantities across the two systems.
Formula used: L = qt × 0.946353
Need to convert liters to quarts? Try our Liters to Quarts Converter.
Quarts to Liters Formula
To convert quarts to liters, multiply by 0.946353.
Formula: L = qt × 0.946353
For example, 4 qt × 0.946353 = 3.785 L (1 US gallon).
One US liquid quart is defined as exactly 0.946352946 liters. This value derives from the gallon: 1 US gallon = 231 cubic inches = 3.785411784 liters, and 1 gallon = 4 quarts exactly, so 1 quart = 3.785411784 ÷ 4 = 0.946352946 liters. Because the definition is exact, no rounding error accumulates regardless of the quantity involved.
The Quart: A Quarter of a Gallon
The quart gets its name directly from its relationship to the gallon — it is literally a "quarter" gallon, from Latin quartus meaning "fourth." This makes it among the most logically named units in the imperial system. The US liquid quart was standardized as part of the broader US customary system in the 19th century, with its metric equivalent formalized by international agreement in 1959 when the yard and pound were defined in metric terms, anchoring the quart permanently at 0.946352946 liters.
One important distinction: there are actually multiple quarts. The US liquid quart (0.946 L) is different from the US dry quart (1.101 L) used for grains and produce, and both differ from the UK imperial quart (1.137 L). The US liquid quart is by far the most common in everyday contexts — cooking, beverages, and fluids. When recipes and product labels in the United States reference "a quart" without qualification, they mean the US liquid quart of 0.946 liters.
Quarts to Liters Conversion Table
| Quarts (qt) | Liters (L) |
|---|---|
| 0.5 qt | 0.473 L |
| 1 qt | 0.946 L |
| 2 qt | 1.893 L |
| 4 qt | 3.785 L |
| 5 qt | 4.732 L |
| 8 qt | 7.571 L |
| 10 qt | 9.464 L |
| 16 qt | 15.142 L |
| 20 qt | 18.927 L |
| 40 qt | 37.854 L |
When to Convert Quarts to Liters
Cooking and baking from metric recipes: European, Australian, and South American recipes express liquid ingredients in liters or milliliters. A recipe calling for 1 liter of chicken stock is roughly 1.057 quarts — just over 1 quart and a few tablespoons extra. A US cook using quart-sized measuring containers will need to fill a quart and add a small extra measure. Knowing the precise equivalent matters for liquid-sensitive dishes like soups, sauces, and brines where ingredient ratios directly affect the outcome.
Automotive fluids and engine capacity: Engine oil, coolant, and transmission fluid are measured in quarts in the US but sold in liters in most other countries. A US vehicle requiring a 5-quart oil capacity needs 4.73 liters — useful when sourcing oil from a metric supplier or traveling abroad. Similarly, radiator coolant sold in 1-liter or 2-liter containers in Europe translates to about 1.06 and 2.11 quarts respectively, preventing underfilling when you only have a liter container available.
Home brewing and fermentation: Brewing recipes from metric sources specify volumes in liters, while US homebrewers typically measure in quarts and gallons. A 10-liter batch corresponds to 10.57 quarts — just over 2.6 gallons. The precise conversion ensures ingredient amounts scale correctly, which matters particularly for hop additions, yeast pitching rates, and priming sugar calculations that depend on accurate batch volume.
Food service and bulk purchasing: Commercial kitchens often receive products in metric quantities (5-liter and 10-liter containers are standard for imported ingredients) but portion and record inventory in quarts. Converting between the two ensures accurate inventory counts and prevents recipe scaling errors for high-volume liquids like stock, cream, and cooking oil.
FAQ
How many liters is 1 quart?
1 US liquid quart = exactly 0.946352946 liters. As a practical shorthand, 1 quart ≈ 0.946 L — just under 1 liter. A standard 1-quart measuring container holds about 946 mL, which is 54 mL less than a full liter.
How many liters is 4 quarts?
4 quarts = 1 US gallon = exactly 3.785411784 liters. This is the metric definition of the US gallon, making the quart exactly one-quarter of 3.785 liters. A standard 1-gallon paint can, juice jug, or milk container holds exactly 4 quarts or approximately 3.785 liters.
Is a quart less than a liter?
Yes — a US liquid quart (0.946 L) is about 54 mL smaller than a liter. Think of it as a liter minus about 3.6 tablespoons. You need 1.057 quarts to fill a 1-liter container exactly.
How many quarts in a gallon?
Exactly 4 quarts = 1 US gallon. This is a defined relationship with no rounding. A 5-gallon water jug holds exactly 20 quarts or approximately 18.93 liters.
What is the difference between US and UK quarts?
A US liquid quart = 0.946 L. A UK imperial quart = 1.137 L — about 20% larger. This difference traces back to the UK retaining the older wine gallon standard after US measures diverged from British ones in the 18th century. Always confirm which quart a recipe or label means when cooking from British sources. This converter uses the US liquid quart.