Gallons To Quarts Conversion (gal To Qt) - Inch Calculator

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• Gallons to Quarts Converter
• How to Convert Gallons to Quarts
• How Many Quarts Are in a Gallon?
• What Is a Gallon?
• What Is a Quart?
• Gallon to Quart Conversion Table
• References

Person Icon By Joe Sexton

Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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Sexton, J. (n.d.). Gallons to Quarts Converter. Inch Calculator. Retrieved December 9, 2025, from https://www.inchcalculator.com/convert/gallon-to-quart/

How to Convert Gallons to Quarts

To convert a measurement in gallons to a measurement in quarts, multiply the volume by the following conversion ratio: 4 quarts/gallon.

Since one gallon is equal to 4 quarts, you can use this simple formula to convert:

quarts = gallons × 4

The volume in quarts is equal to the volume in gallons multiplied by 4.

For example, here's how to convert 5 gallons to quarts using the formula above.

quarts = (5 gal × 4) = 20 qt

How Many Quarts Are in a Gallon?

There are 4 quarts in a gallon, which is why we use this value in the formula above.

1 gal = 4 qt

Gallons and quarts are both units used to measure volume. Keep reading to learn more about each unit of measure.

What Is a Gallon?

The US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups.[1] The US liquid gallon should not be confused with the US dry gallon or the imperial gallon, which are different units of measure.

The gallon is a US customary unit of volume. Gallons can be abbreviated as gal; for example, 1 gallon can be written as 1 gal.

Learn more about gallons.

What Is a Quart?

The US liquid quart is a unit of fluid volume equal to one fourth of a gallon, two pints, or four cups.

The liquid quart should not be confused with the dry quart (US) or the imperial quart, which are different units. However, when someone refers to a volume in quarts, they typically mean the US liquid quart.

The quart is a US customary unit of volume. Quarts can be abbreviated as qt; for example, 1 quart can be written as 1 qt.

Learn more about quarts.

Gallon to Quart Conversion Table

Table showing various gallon measurements converted to quarts.

Gallons	Quarts
1 gal	4 qt
2 gal	8 qt
3 gal	12 qt
4 gal	16 qt
5 gal	20 qt
6 gal	24 qt
7 gal	28 qt
8 gal	32 qt
9 gal	36 qt
10 gal	40 qt
11 gal	44 qt
12 gal	48 qt
13 gal	52 qt
14 gal	56 qt
15 gal	60 qt
16 gal	64 qt
17 gal	68 qt
18 gal	72 qt
19 gal	76 qt
20 gal	80 qt
21 gal	84 qt
22 gal	88 qt
23 gal	92 qt
24 gal	96 qt
25 gal	100 qt
26 gal	104 qt
27 gal	108 qt
28 gal	112 qt
29 gal	116 qt
30 gal	120 qt
31 gal	124 qt
32 gal	128 qt
33 gal	132 qt
34 gal	136 qt
35 gal	140 qt
36 gal	144 qt
37 gal	148 qt
38 gal	152 qt
39 gal	156 qt
40 gal	160 qt

References

1. National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf

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