Quarts To Gallons Conversion (qt To Gal) - Inch Calculator

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• Quarts to Gallons Converter
• How to Convert Quarts to Gallons
• How Many Gallons Are in a Quart?
• What Is a Quart?
• What Is a Gallon?
• Quart to Gallon 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.). Quarts to Gallons Converter. Inch Calculator. Retrieved December 18, 2025, from https://www.inchcalculator.com/convert/quart-to-gallon/

How to Convert Quarts to Gallons

To convert a measurement in quarts to a measurement in gallons, divide 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:

gallons = quarts ÷ 4

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

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

gallons = (5 qt ÷ 4) = 1.25 gal

How Many Gallons Are in a Quart?

There are 0.25 gallons in a quart, which is why we use this value in the formula above.

1 qt = 0.25 gal

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

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.

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.

Quart to Gallon Conversion Table

Table showing various quart measurements converted to gallons.

Quarts	Gallons
1 qt	0.25 gal
2 qt	0.5 gal
3 qt	0.75 gal
4 qt	1 gal
5 qt	1.25 gal
6 qt	1.5 gal
7 qt	1.75 gal
8 qt	2 gal
9 qt	2.25 gal
10 qt	2.5 gal
11 qt	2.75 gal
12 qt	3 gal
13 qt	3.25 gal
14 qt	3.5 gal
15 qt	3.75 gal
16 qt	4 gal
17 qt	4.25 gal
18 qt	4.5 gal
19 qt	4.75 gal
20 qt	5 gal
21 qt	5.25 gal
22 qt	5.5 gal
23 qt	5.75 gal
24 qt	6 gal
25 qt	6.25 gal
26 qt	6.5 gal
27 qt	6.75 gal
28 qt	7 gal
29 qt	7.25 gal
30 qt	7.5 gal
31 qt	7.75 gal
32 qt	8 gal
33 qt	8.25 gal
34 qt	8.5 gal
35 qt	8.75 gal
36 qt	9 gal
37 qt	9.25 gal
38 qt	9.5 gal
39 qt	9.75 gal
40 qt	10 gal

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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