Quart in Math – Definition, Types, Examples

What Is ‘Quart’ in Math?

A quart (symbol: qt) is a unit of volume in the US customary system of measurement and the imperial system of measurement. Since it represents one quarter of a gallon, the unit is named ‘quart.’

How big is a quart?

1 quart $= \frac{1}{4}$ gallon = 2 pints = 4 cups

Quart: Definition

A quart is a Customary and Imperial unit used to measure volume or capacity, where one quart equals a quarter of a gallon. 

Types of Quart

There are two types of quarts: US quart and Imperial quart.

1) US Quart: 

The US quart refers to the unit of volume measurement used in the US customary system. It is one quarter of a US gallon.

The US quart is further divided into two types: US liquid quart and US dry quart

i) US Liquid Quart: The U.S. customary system uses the liquid quart for measuring liquids like milk and water.

1 quart (US) = 946.353 mL

ii) US Dry Quart: The dry quart is used for measuring bulk quantities of dry ingredients like grains.

1 quart (imperial) = 1136.523 mL

2) Imperial Quart: The imperial system (Old British Imperial System) is used in the UK and other commonwealth countries. One imperial quart is one quarter of an imperial gallon. Although the United Kingdom formally adopted the metric system in the 1960s, the use of the imperial system is still common in specific contexts.

US Quart vs. Imperial Quarts

In both the systems, a quart is defined as one quarter of a gallon, but the actual measurements are different since the US customary system and the Imperial systems define gallon differently. It is convenient to compare US quart measurement and imperial quart measurement in milliliters.

• 1 US gallon = 3,785.412 mL 

1 US quart = 946.353 mL

• 1 Imperial gallon = 4,546.092 mL

1 Imperial quart = 1,136.522 mL

US Quart	Imperial Quart
One US quart is a quarter of one US gallon.	One Imperial quart is a quarter of one Imperial gallon.
Commonly used in the USA.	It was formerly used in the UK.
1 US gallon = 3,785.412 mL1 US quart = 946.353 mL1 US quart = 32 US fluid ounces	1 Imperial gallon = 4,546.092 mL1 Imperial quart  = 1,136.522 mL1 Imperial quart = 40 Imperial fluid ounces

Quart Conversions

Conversion	US Quart	Imperial Quart
Quarts to Pints	1 US quart = 2 US pints	1 Imperial quart = 2 pints
Quarts to Cups	1 US quart = 4 US cups	1 Imperial quart = 4 cups
Quarts to Fluid Ounces	1 US quart = 32 US fluid ounces	1 Imperial quart = 40 fluid ounces
Quarts to Liters	1 US quart ≈ 0.94635 liters	1 Imperial quart ≈ 1.1365 liters
Quarts to Milliliters	1 US quart ≈ 946.35 liters	1 Imperial quart ≈ 1136.5 liters
Quarts to Gallons	1 US quart = 0.25 US gallons	1 Imperial quart ≈ 0.25 gallons

Here’s a chart representing equivalent measurements in US customary system:

Sr. No.	Equivalent Measurements
i)	4 quarts	1 gallon	128 ounces
ii)	2 pints	1 quart	32 ounces
iii)	2 cups	1 pint	16 ounces
iv)	4 cups	1 quart	946 milliliters
v)	1 cup	8 ounces	237 milliliters

US Dry Quart and US Liquid Quart

There is a slight difference between US dry volumes and liquid volumes. While cooking, if someone is using the US customary system, it is important to keep this minor but important difference in mind.

Dry measurements are typically used for ingredients like grains and produce, while liquid measurements are used for fluids such as water and milk.

1 US liquid quart = 946.353 mL

1 US dry quart = 1,101.221 mL

Measurement	US Dry Quart	US Liquid Quart
Abbreviation	qt (dry)	qt (liquid)
Fluid Ounces	37.2366 fl oz	32 fl oz
Cups	4.65458 cups	4 cups
Pints	2.32729 pints	2 pints
Gallons	0.25 gallons	0.25 gallons
Liters	1.101 liters	0.946353 liters

The value of quarts to gallons is the same in both US Customary Units and British Imperial Metric Systems.

Applications of Quart

• It is majorly used to measure the quantity of liquids like milk, water, oil, etc. The dry quart is used to measure solids like cereal, flour, ice cream, etc.
• The quart is a versatile unit of measurement that is convenient for various applications. In the culinary world, ingredients in the recipes are often measured in quarts. 

• The quart is also commonly used in the dairy industry for selling and packaging milk. Milk is often sold in containers measured in quarts, allowing consumers to easily understand the quantity they are purchasing.

• It is frequently used in scientific research, particularly in chemistry and biology, for measuring liquids or solutions. Furthermore, the quart is used in household products, such as cleaning solutions or laundry detergents, which are often packaged and sold in quart-sized containers for consumer convenience.

Facts about Quart

Conclusion

In this article, we learned about the unit “quart,” used to measure volume or capacity in both the customary and imperial systems. Let’s solve a few examples and practice problems based on the learned concepts.

Solved Examples on Quart

1. Convert 2 US quarts into US gallons.

Solution: 

1 US gallon = 4 US quarts  

Thus, 2 US quarts = 0.5 US gallon

2. Convert 4 US quarts into gallons.

Solution: 

1 quart = 0.25 gallon

To convert 4 quarts into gallons, we multiply volume in quarts by 0.25.

$4 \times 0.25 = 1$ gallon

Hence, 4 quarts equal 1 gallon.   

3. Convert 10 US quarts into liters.

Solution:

1 US quart = 0.946 liters

To convert one quart into liters, we multiply volume in quarts by 0.946.

$10 \times 0.946$ liters = 9.46 liters

Hence, 10 quarts equal 9.46 liters. 

4. How many mL are in 0.037 quarts?

Solution:

1 quart = 946.35 mL

For an approximate result, we multiply the volume value in quarts by 946.4.

0.037 quarts ≈ 35 mL

5. A glass can hold 2 pints of water, and a mug can hold 30 fl oz of water. Which one holds more water?

Solution: 

Let’s convert units of both the measurements into quarts.

i) Glass:

2 US pints = 1 US quart 

i) Mug:

1 US quart = 32 US fluid ounces

30 fl oz = 0.9375 US quart

Here, 1 US quart > 0.9375 US quart 

Hence, the glass has more water.

Practice Problems on Quart

Frequently Asked Questions about Quart