Quart (US) to Gallon (US) Converter

Volume Converter

40 units available

Decimals:

From

To

0.25

1 qt = 0.25 gal

Formula:

gal = qt × 0.25

With your value: 1 qt = 0.25 gal

How big is that?

Everyday references on a logarithmic scale, all expressed in quart (us) so you can sanity-check the result.

Milk carton (1/9.5e+2 your value)0.00106 qt

Kitchen bucket (1/95 your value)0.0106 qt

Car fuel tank (1/19 your value)0.0528 qt

Bathtub (1/4.7 your value)0.211 qt

Your value1.00 qt

Hot tub (1.6× your value)1.59 qt

Other Quart (US) to Gallon (US) conversions

2 qt to gal 3 qt to gal 4 qt to gal 5 qt to gal 6 qt to gal 7 qt to gal 8 qt to gal

Quart (US) to Gallon (US) Conversion Table

Quart (US) (qt)	Gallon (US) (gal)
0.5	0.125
1	0.25
2	0.5
5	1.25
10	2.5
15	3.75
20	5
25	6.25
50	12.5
100	25
250	62.5
500	125
1000	250

Gallon (US) to Quart (US) Conversion Table

Gallon (US) (gal)	Quart (US) (qt)
0.5	2
1	4
2	8
5	20
10	40
15	60
20	80
25	100
50	200
100	400
250	1,000
500	2,000
1000	4,000

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Quart (US) (qt)

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Gallon (US) (gal)

Volume

Exact conversion

The US liquid gallon is exactly 231 cubic inches = 3.785 411 784 L.

Source: NIST Handbook 44, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Quart (US) to Gallon (US)

To convert from Quart (US) (qt) to Gallon (US) (gal), multiply the value by 0.25.

Formula: gal = qt × 0.25

Reverse: qt = gal × 4

Step-by-Step Example

Start with your value in Quart (US). For example: 5 qt
Multiply by the conversion factor: 5 x 0.25
The result is: 1.25 gal

About Quart (US)

The quart (us) (qt) is a unit of volume and capacity. One quart (us) equals 0.946352946 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: volume calculations, engineering and science, education.

About Gallon (US)

The US gallon equals approximately 3.785 liters and is the standard unit for fuel and large liquid volumes in the United States.

Fun Fact: The US gallon is about 20% smaller than the imperial (UK) gallon.

Common uses: fuel (US), beverages, swimming pools.

Frequently Asked Questions

How many Gallon (US) are in 1 Quart (US)?

There are exactly 0.25 Gallon (US) in 1 Quart (US). This means the conversion factor from Quart (US) to Gallon (US) is 0.25.

What is the formula to convert Quart (US) to Gallon (US)?

The formula to convert Quart (US) to Gallon (US) is: gal = qt × 0.25. For example, to convert 10 Quart (US) to Gallon (US), you would multiply 10 by 0.25.

What is a Quart (US)?