Quart to Milliliter Converter
Convert quarts to milliliters with our free online volume converter.
Quick Answer
1 Quart = 946.352946 milliliters
Formula: Quart × conversion factor = Milliliter
Use the calculator below for instant, accurate conversions.
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Quart to Milliliter Calculator
How to Use the Quart to Milliliter Calculator:
- Enter the value you want to convert in the 'From' field (Quart).
- The converted value in Milliliter will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Volume category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Quart to Milliliter: Step-by-Step Guide
Converting Quart to Milliliter involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Quart = 946.3529 millilitersExample Calculation:
Convert 10 quarts: 10 × 946.3529 = 9463.529 milliliters
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
Need to convert to other volume units?
View all Volume conversions →What is a Quart and a Milliliter?
The US liquid quart (symbol qt US) is a unit of volume in the United States customary units system. It is equal to one-quarter of a US gallon, which is exactly 57.75 cubic inches or approximately 0.946 liters. It is commonly used for measuring medium quantities of liquids, such as milk, oil, and juices.
Precise definition:
- 1 US liquid quart = 1/4 US gallon (exactly)
- 1 US liquid quart = 32 US fluid ounces (exactly)
- 1 US liquid quart = 2 US pints (exactly)
- 1 US liquid quart = 4 US cups (exactly)
- 1 US liquid quart = 57.75 cubic inches (exactly)
- 1 US liquid quart = 946.352946 milliliters (exactly, since 1959)
- 1 US liquid quart ≈ 0.946353 liters
Relationship to metric:
- 1 liter ≈ 1.057 US quarts (about 5.7% larger)
- 1 US quart ≈ 0.946 liters (about 5.4% smaller than liter)
US Liquid Quart vs. Imperial Quart
Critical distinction for international recipes and commerce:
US Liquid Quart:
- 946.35 milliliters (0.946 L)
- Based on US gallon (231 cubic inches)
- Used in: United States
- 1/4 of US gallon (exactly)
Imperial Quart:
- 1,136.52 milliliters (1.137 L)
- Based on Imperial gallon (277.42 cubic inches)
- Used in: United Kingdom, Canada (declining), some Commonwealth nations
- 1/4 of Imperial gallon (exactly)
Size comparison:
- Imperial quart is 20% larger than US quart
- 1 Imperial quart = 1.201 US quarts
- 1 US quart = 0.833 Imperial quarts
Why this matters:
- UK recipe calling for "1 quart" = 1.137 L (need 1.2 US quarts)
- US recipe calling for "1 quart" = 0.946 L (UK needs 0.83 Imperial quarts)
- Packaged goods: Must specify which quart when importing/exporting
US Liquid Quart vs. US Dry Quart
Two different quarts in US measurement system:
US Liquid Quart:
- 946.35 milliliters (0.946 L)
- Used for liquids: milk, juice, oil, water
- 32 fluid ounces
- Most common in everyday use
US Dry Quart:
- 1,101.22 milliliters (1.101 L)
- Used for dry goods: berries, grains, produce
- 16.4% larger than liquid quart
- Rarely used (mostly replaced by weight measurements)
When you see "quart" without qualifier: Assume liquid quart (default in US)
The milliliter (symbol: mL or ml) is a unit of volume equal to exactly one-thousandth of a liter (1/1000 L or 0.001 L). Critically, 1 milliliter equals exactly 1 cubic centimeter (1 cm³ or 1 cc).
The milliliter is part of the International System of Units (SI) and uses the metric prefix "milli-" meaning one-thousandth (from Latin mille, "thousand").
Mathematical Relationships
1 milliliter equals:
- 0.001 liters (L)
- 1 cubic centimeter (cm³ or cc) exactly
- 0.000001 cubic meters (m³)
- 0.033814 US fluid ounces (fl oz)
- 0.035195 UK fluid ounces (imperial)
- 0.202884 teaspoons (tsp)
- 0.067628 tablespoons (tbsp)
Key water relationship:
- 1 mL of water weighs 1 gram (at 4°C, maximum density)
This elegant relationship makes metric conversions trivial for water-based solutions.
Milliliter = Cubic Centimeter (cc)
Perfect equivalence: 1 mL = 1 cm³ = 1 cc (all three are identical)
Why this matters:
- Medical syringes often marked in "cc" (cubic centimeters) = milliliters
- Engine displacement: "2000 cc engine" = 2000 mL = 2.0 L
- Laboratory glassware uses both mL and cm³ interchangeably
- A cube with 1 cm sides (1 cm × 1 cm × 1 cm) holds exactly 1 mL
Symbol variations:
- mL (preferred in scientific publishing—avoids confusion with number "1")
- ml (common in everyday use)
- cc (common in medical and automotive contexts)
Why Milliliters?
While the liter is the base metric unit for volume, milliliters are more practical for everyday measurements:
Perfect human scale: Most cooking ingredients, medications, and beverage servings fall into the 5-500 mL range, avoiding decimals.
Avoids decimal confusion: "250 milliliters of milk" is clearer than "0.25 liters of milk" for most people.
Universal adoption: Used in 195+ countries for recipes, medicine, beverages, and laboratory work.
Note: The Quart is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Milliliter belongs to the metric (SI) system.
History of the Quart and Milliliter
The quart, meaning 'quarter part' (of a gallon), shares its history with the gallon. The US liquid quart is derived from the English wine gallon (231 cubic inches), making it distinct from the Imperial quart used elsewhere, which is based on the larger Imperial gallon.
Medieval Origins: The "Quarter Gallon"
Etymology and early use:
"Quart" from Latin "quartus":
- Latin: "quartus" = fourth
- Old French: "quarte" = quarter
- English: "quart" = one-fourth of a gallon
- Simple fractional relationship made it practical for trade
Medieval English liquid measures:
- Gallon: Primary large liquid unit (wine, ale, milk)
- Quart: 1/4 gallon (convenient middle size)
- Pint: 1/8 gallon (1/2 quart)
- Cup: 1/16 gallon (1/2 pint)
Why quarters were useful:
- Easy mental math: 4 quarts = 1 gallon
- Convenient container size for households
- Balanced between pint (too small for families) and gallon (too large for single use)
English Wine Gallon Standard (1707)
Queen Anne establishes wine gallon:
1707: Wine Gallon Act:
- Defined wine gallon as 231 cubic inches (exactly)
- Based on cylinder 7 inches diameter × 6 inches high
- Created to standardize wine trade across British Empire
- Wine quart = 231 ÷ 4 = 57.75 cubic inches
Why "wine" gallon:
- Separate from "ale gallon" (282 cubic inches) used for beer
- Wine gallon used for wines, spirits, and general liquids
- Eventually became standard for all liquids in American colonies
Colonial American adoption:
- American colonies used English wine gallon system
- Quart became standard for milk, cider, cooking liquids
- Taverns served drinks by the quart or pint
American Independence and Standardization (1776-1832)
US preserves wine gallon after independence:
1776-1820s: Post-independence confusion:
- No official federal standard after breaking from Britain
- States used varying interpretations of gallon/quart
- Trade disputes over measurement differences
1832: US Treasury Department standardization:
- Treasury established 231 cubic inch gallon as official US standard
- Quart = 57.75 cubic inches (1/4 gallon)
- Based on physical "gallon standard" kept in Treasury
- Applied to customs, commerce, taxation
Comparison to other measures:
- US adopted wine gallon (231 in³)
- Rejected British ale gallon and corn gallon
- Created permanent US standard independent of Britain
British Imperial Divergence (1824)
UK creates larger Imperial quart:
1824: Weights and Measures Act (UK):
- Britain replaced wine/ale gallon confusion with single Imperial gallon
- Imperial gallon = 277.42 cubic inches (10 pounds of water at 62°F)
- Imperial quart = 277.42 ÷ 4 = 69.36 cubic inches
- 20% larger than US quart
Why Britain changed:
- Wine/ale gallon system created confusion and fraud
- Wanted single standard based on water weight (metric influence)
- Scientific definition more precise than arbitrary cylinder
US did NOT follow:
- United States retained 231 cubic inch wine gallon
- Too disruptive to change established commerce
- American identity separate from British standards
- Permanent US-UK measurement split created
Result:
- US quart = 946 mL (wine gallon basis)
- Imperial quart = 1,137 mL (Imperial gallon basis)
- 20% size difference persists today
Metric Definition (1959)
Precise metric equivalent established:
July 1, 1959: International Yard and Pound Agreement:
- Defined 1 inch = exactly 25.4 millimeters
- From this: 1 cubic inch = 16.387064 cm³
- 1 US quart = 57.75 in³ × 16.387064 = 946.352946 mL (exactly)
Why this mattered:
- Ended slight US-UK inch discrepancies
- Allowed precise metric conversion
- International trade standardization
- Scientific calculations simplified
Modern Era (1960s-Present)
Metric pressure vs. quart persistence:
US resistance to metrication:
- 1975 Metric Conversion Act: Voluntary metric adoption (largely failed)
- Quart remains standard for beverages, automotive fluids, cooking
- Dual labeling common: "1 quart (946 mL)"
- No plans to eliminate quart from commerce
Other countries' metrication:
- Canada: Officially metric since 1970s, but Imperial quarts still understood
- UK: Officially metric, but pints persist for beer/milk (quarts rare)
- Australia/NZ: Fully metric, quarts obsolete
Current US usage:
- Grocery: Milk, juice, broth sold in quarts
- Automotive: Motor oil in quart bottles
- Cooking: Recipes use quarts for liquids
- Paint/adhesives: Often sold by quart
- Nurseries: Potting soil, plant containers sized in quarts
French Revolution: Birth of the Liter (1795)
Metric System Creation: The milliliter's story begins with the French Revolution's creation of the liter in 1795.
Water-Based Definition: One liter was originally defined as the volume occupied by one kilogram of pure water at maximum density (approximately 4°C or 39°F).
Elegant Interconnection:
- 1 liter of water = 1 kilogram = 1,000 grams
- 1 milliliter of water = 1 gram
- 1 milliliter = 1 cubic centimeter
This made the metric system beautifully self-consistent—volume, mass, and spatial dimensions all linked through water.
Etymology: The word "liter" comes from the obsolete French unit "litron," which was derived from Medieval Latin "litra" (a unit of mass).
The Medieval Litron: A Pre-Metric Precursor
Before the French Revolution standardized the liter, the "litron" was a measure for grain and salt.
- The Royal Litron: In the 17th century, the litron was roughly equivalent to 0.81 liters. However, because it was often measured using wooden boxes that could warp with humidity, the volume of a litron changed with the seasons.
- The Tax Man's Litron: French peasants often had to pay their taxes in litrons of grain. This created a massive incentive for the crown to "expand" the litron while the peasants tried to "shrink" it, a measurement war that only ended with the precision of the metric milliliter.
The Milliliter in 19th Century Pharmacy
As "Apothecary" shops evolved into modern pharmacies, the "Drop" became a liability.
- The Graduated Minim: Pharmacists used a 1-minim dropper, which was supposed to be 1/60th of a fluid dram. However, because the viscosity of oils versus tinctures resulted in different drop sizes, pharmacists pushed for the adoption of the milliliter as the only legally defensible unit for liquid drugs.
The Prefix "Milli-"
Latin Origin: "Milli-" comes from the Latin "mille" meaning "thousand."
Meaning: Milli- means one-thousandth (1/1000 or 0.001).
Other milli- units:
- Millimeter: 1/1000 meter
- Milligram: 1/1000 gram
- Millisecond: 1/1000 second
- Milliliter: 1/1000 liter
19th Century: Global Spread
1875: Metre Convention: The Treaty of the Metre established international cooperation on measurement standards. The liter (and milliliter) became recognized internationally.
Scientific Adoption: Laboratories worldwide embraced milliliters for precise liquid measurements, replacing inconsistent local units.
Medical Use: By the late 1800s, medicine had standardized on milliliters (or cubic centimeters/cc) for drug dosages and liquid medicines.
1901: Redefinition
Precision Refinement: In 1901, the liter was redefined as the volume of 1 kg of pure water at maximum density under standard atmospheric pressure. This made the liter slightly larger than 1 cubic decimeter (by about 28 parts per million).
1964: Modern Definition
CIPM Decision: The International Committee for Weights and Measures (CIPM) redefined the liter as exactly one cubic decimeter (1 dm³).
Impact on milliliters: 1 milliliter = exactly 1 cubic centimeter (1 cm³), eliminating any tiny discrepancy.
Current definition: The milliliter is now purely geometric—the volume of a cube with 1 cm sides—rather than water-based.
Common Uses and Applications: quarts vs milliliters
Explore the typical applications for both Quart (imperial/US) and Milliliter (metric) to understand their common contexts.
Common Uses for quarts
US Beverages
Selling milk, juice, and other beverages in the US.
Standard retail sizes:
- Milk: Half-pint (8 oz), pint (16 oz), quart (32 oz), half-gallon (64 oz), gallon (128 oz)
- Juice: Often 32 oz (quart) or 64 oz (half-gallon)
- Broth: Industry standard 32 oz carton = 1 quart
Why quarts work for beverages:
- Household consumption: 1 quart = 4 servings (8 oz each)
- Refrigerator fit: Quart cartons stack efficiently
- Freshness: Smaller than gallon, finishes before spoiling
- Portability: Easier to pour than gallon
Regional preferences:
- Northeast: Quarts common for milk
- Midwest/South: Half-gallons and gallons more popular
- Urban areas: Quarts suit smaller households
Automotive Fluids
Measuring motor oil.
Standard bottle size:
- 1 quart = 32 fl oz (946 mL)
- Convenient for topping off oil between changes
- Most engines require 4-6 quarts total
Industry standardization:
- Auto parts stores stock dozens of quart bottles
- Oil change shops buy bulk, dispense by quart
- Owner's manual specifies capacity in quarts
- Dipstick markings often show "add 1 qt" range
Environmental note:
- Empty quart bottles must be recycled properly
- Many retailers accept used oil and empty containers
Culinary Measurements
Cooking and recipe measurements, particularly for liquids.
Recipe conversions:
- 2 cups = 1 pint = 0.5 quarts
- 4 cups = 2 pints = 1 quart
- 8 cups = 4 pints = 2 quarts = half-gallon
Common recipe calls:
- "Bring 4 quarts of salted water to boil" (pasta)
- "Add 2 quarts chicken stock" (soup)
- "Use 6-quart slow cooker" (appliance sizing)
Measurement accuracy:
- For precision baking: Use cups and ounces
- For large-batch cooking: Quarts convenient
- Professional kitchens: Often use weight (grams) instead
Gardening
Gardening (measuring soil, water).
Soil and amendments:
- Potting mix sold in quarts for small projects
- Plant containers sized in quarts (1-qt, 2-qt pots)
Watering:
- Watering cans often 1-2 quart capacity
- "Water with 1 quart per plant" instructions
Liquid fertilizers:
- Concentrated fertilizers in quart bottles
- Dilution instructions: "1 oz per quart of water"
When to Use milliliters
Medicine and Pharmacology
Prescription Medications: Liquid medications measured in milliliters:
- Antibiotics: "Take 10 mL twice daily"
- Cough syrup: "Take 15 mL every 4-6 hours"
- Pain relievers: "Give 5 mL per dose for children"
Dosing Precision: Milliliters allow accurate dosing:
- Pediatric doses often require precision to 0.5 mL
- Adult doses typically 5-30 mL range
- Measuring spoons or syringes marked in mL
IV Fluids: Hospital IV bags measured in mL:
- Saline drip: 1,000 mL bag, infused over hours
- Medication delivery: 50-250 mL piggyback bags
- Fluid intake/output: tracked in mL for patient monitoring
Cooking Worldwide
Global Recipe Standard: Most countries use milliliters for liquid ingredients:
- "Add 250 mL milk"
- "Mix in 30 mL soy sauce"
- "Drizzle with 45 mL olive oil"
Kitchen Measuring Tools:
- Liquid measuring cups: marked in mL (and fluid ounces in US)
- Measuring spoons: 1.25 mL, 2.5 mL, 5 mL, 15 mL
- Kitchen scale with liquid mode: measures mL for water-based liquids
Precision Baking: Professional bakers prefer milliliters for consistency:
- Eliminates meniscus reading errors
- Repeatable results
- Easy scaling (double recipe = double all mL measurements)
Beverage Industry
Product Labeling: Beverages worldwide labeled in milliliters:
- "Contents: 355 mL (12 fl oz)"
- "Serving size: 250 mL"
- "Servings per container: 4 (1,000 mL bottle)"
Alcohol Content: "Standard drink" defined in mL in many countries:
- Australia: 10 mL pure alcohol = 1 standard drink
- UK: 8 mL (10g) pure alcohol = 1 unit
- US: 14 mL (17.7g) pure alcohol = 1 standard drink
Bartending: Cocktail recipes use milliliters:
- Jigger: 30 mL (1 oz) or 45 mL (1.5 oz)
- Recipes: "45 mL vodka, 15 mL lime juice, 10 mL simple syrup"
Laboratory Science
Chemistry: Milliliters essential for chemical reactions:
- Titrations: measuring acid/base volumes to 0.1 mL
- Solution preparation: "Dissolve in 500 mL solvent"
- Concentration: moles per liter (mol/L or M)
Biology: Cell culture and biological assays:
- Cell culture media: 10-50 mL per flask
- PCR reactions: measured in microliters (µL), 1 µL = 0.001 mL
- Biological samples: typically 0.5-5 mL volumes
Physics: Density measurements use mL:
- Density = mass (grams) ÷ volume (milliliters) = g/mL
- Water: 1 g/mL at 4°C
- Alcohol: 0.79 g/mL
- Mercury: 13.6 g/mL
Cosmetics and Personal Care
Product Packaging: Cosmetics labeled in milliliters:
- Perfume: 30 mL, 50 mL, 100 mL bottles
- Foundation: 30-50 mL bottles
- Shampoo: 250 mL, 500 mL, 1,000 mL bottles
- Travel sizes: typically 100 mL or less (TSA limit)
Additional Unit Information
About Quart (qt)
How many pints are in a US quart?
There are exactly 2 US liquid pints in 1 US liquid quart. This is a fundamental relationship: quart = 2 pints, pint = 1/2 quart. For example, a quart of milk equals two pint-sized servings.
How many cups are in a US quart?
There are exactly 4 US customary cups in 1 US liquid quart. This is one of the most useful kitchen conversions: 1 quart = 4 cups = 32 fluid ounces. For cooking, remember that doubling a 2-cup measurement gives you 1 quart.
Is a US quart the same as an Imperial quart?
No. The US liquid quart (≈ 0.946 L) is about 20% smaller than the Imperial quart (≈ 1.137 L). The US quart is based on the wine gallon (231 cubic inches ÷ 4), while the Imperial quart is based on the larger Imperial gallon (277.42 cubic inches ÷ 4). When using British or Canadian recipes, you must convert: 1 Imperial quart = 1.2 US quarts.
How many fluid ounces are in a quart?
There are exactly 32 US fluid ounces in 1 US liquid quart. This is standard across all liquid measurements: milk cartons, broth containers, and juice bottles labeled "1 quart" contain 32 fl oz. Remember: 8 oz = 1 cup, 16 oz = 1 pint, 32 oz = 1 quart, 128 oz = 1 gallon.
How many quarts are in a gallon?
There are exactly 4 quarts in 1 US gallon. The word "quart" literally means "quarter" (of a gallon). This makes gallon-to-quart conversion easy: 1 gallon = 4 quarts, half-gallon = 2 quarts, quarter-gallon = 1 quart.
Is a quart bigger than a liter?
No, a US quart (946 mL) is slightly smaller than a liter (1,000 mL) by about 5.4%. Think of it this way: 1 liter = 1.057 quarts (about 5.7% more). For rough estimates, you can approximate 1 quart ≈ 1 liter, but for precision cooking or measurements, use the exact conversion: 1 qt = 0.946 L.
Why is motor oil sold in quarts?
Motor oil is sold in quarts because most engine oil capacities are 4-6 quarts, making quart bottles convenient for oil changes and top-ups. The quart size prevents overfilling (adding a full gallon would be too much) and allows mechanics and car owners to add exactly the amount needed. This standard has persisted for over a century in the automotive industry. Most oil change intervals involve draining the old oil and adding 4-5 individual quart bottles.
What is a dry quart?
A dry quart is a separate US measurement (1.101 liters) used for measuring dry goods like berries, grains, and produce, about 16% larger than the liquid quart (0.946 L). However, dry quarts are rarely used today—most dry goods are sold by weight (pounds/ounces or grams/kilograms) rather than volume. When you see "quart" in everyday use, it almost always refers to the liquid quart. Historical note: Farmers' markets occasionally sell berries by the "dry quart" basket.
How many quarts in a 2-liter soda bottle?
A 2-liter soda bottle contains approximately 2.11 US quarts. To convert liters to quarts, multiply by 1.057: 2 L × 1.057 = 2.114 quarts. This is slightly more than 2 quarts (which would be 1.89 liters). For comparison: 1 quart = 946 mL, so 2 quarts = 1.89 L, meaning the 2-liter bottle has about 110 mL (4 oz) extra.
Can I use a quart jar for canning?
Yes, quart-sized Mason jars (32 oz) are standard for home canning and preserving. They're ideal for pickles, tomatoes, jams, sauces, and preserved fruits/vegetables. Canning recipes often specify yields in quarts (e.g., "makes 6 quarts"). Make sure to use proper canning procedures with tested recipes, as jar size affects processing time. Ball and Kerr make standardized quart canning jars designed to withstand boiling water bath or pressure canning.
Why do recipes use quarts instead of liters?
Recipes in the United States use quarts because the US has not adopted the metric system for everyday measurements. Quarts align with other US customary units (cups, pints, gallons) used in American cookbooks, measuring cups, and kitchen tools. Converting recipes to metric would require replacing all standard US measuring equipment. While professional chefs and bakers increasingly use weight (grams), home cooks still predominantly use volume measurements like quarts, cups, and tablespoons.
Conversion Table: Quart to Milliliter
| Quart (qt) | Milliliter (mL) |
|---|---|
| 0.5 | 473.177 |
| 1 | 946.353 |
| 1.5 | 1,419.529 |
| 2 | 1,892.706 |
| 5 | 4,731.765 |
| 10 | 9,463.53 |
| 25 | 23,658.824 |
| 50 | 47,317.647 |
| 100 | 94,635.295 |
| 250 | 236,588.237 |
| 500 | 473,176.473 |
| 1,000 | 946,352.946 |
People Also Ask
How do I convert Quart to Milliliter?
To convert Quart to Milliliter, enter the value in Quart in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our volume converter page to convert between other units in this category.
Learn more →What is the conversion factor from Quart to Milliliter?
The conversion factor depends on the specific relationship between Quart and Milliliter. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.
Can I convert Milliliter back to Quart?
Yes! You can easily convert Milliliter back to Quart by using the swap button (⇌) in the calculator above, or by visiting our Milliliter to Quart converter page. You can also explore other volume conversions on our category page.
Learn more →What are common uses for Quart and Milliliter?
Quart and Milliliter are both standard units used in volume measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our volume converter for more conversion options.
For more volume conversion questions, visit our FAQ page or explore our conversion guides.
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⚖️ Metric vs Imperial
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All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.
National Institute of Standards and Technology — Standards for volume measurements
Last verified: February 19, 2026