Gallon (UK) to Quart (US) Converter

Volume Converter

40 units available

Decimals:

From

To

4.8038

1 gal (UK) = 4.8038 qt

Formula:

qt = gal (UK) × 4.803799702

With your value: 1 gal (UK) = 4.8037997 qt

How big is that?

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

Milk carton (1/4.5e+3 your value)0.000220 gal (UK)

Kitchen bucket (1/4.5e+2 your value)0.00220 gal (UK)

Car fuel tank (1/91 your value)0.0110 gal (UK)

Bathtub (1/23 your value)0.0440 gal (UK)

Hot tub (1/3.0 your value)0.330 gal (UK)

Your value1.00 gal (UK)

Other Gallon (UK) to Quart (US) conversions

2 gal (UK) to qt 3 gal (UK) to qt 4 gal (UK) to qt 5 gal (UK) to qt 6 gal (UK) to qt 7 gal (UK) to qt 8 gal (UK) to qt

Gallon (UK) to Quart (US) Conversion Table

Gallon (UK) (gal (UK))	Quart (US) (qt)
0.5	2.4019
1	4.8038
2	9.607599
5	24.018999
10	48.037997
15	72.056996
20	96.075994
25	120.094993
50	240.189985
100	480.37997
250	1,200.949926
500	2,401.899851
1000	4,803.799702

Quart (US) to Gallon (UK) Conversion Table

Quart (US) (qt)	Gallon (UK) (gal (UK))
0.5	0.104084
1	0.208169
2	0.416337
5	1.040843
10	2.081685
15	3.122528
20	4.163371
25	5.204214
50	10.408427
100	20.816855
250	52.042137
500	104.084273
1000	208.168546

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.

Gallon (UK) (gal (UK))

Volume

Exact conversion

The imperial gallon is exactly 4.546 09 L (Weights and Measures Act 1985).

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

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

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

To convert from Gallon (UK) (gal (UK)) to Quart (US) (qt), multiply the value by 4.803799702.

Formula: qt = gal (UK) × 4.803799702

Reverse: gal (UK) = qt × 0.2081685462

Step-by-Step Example

Start with your value in Gallon (UK). For example: 5 gal (UK)
Multiply by the conversion factor: 5 x 4.803799702
The result is: 24.018999 qt

About Gallon (UK)

The imperial gallon equals exactly 4.54609 litres, about 20% larger than the US gallon — a frequent source of fuel-economy confusion.

Common uses: UK fuel figures, brewing, older recipes.

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.

Frequently Asked Questions

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

There are exactly 4.803799702 Quart (US) in 1 Gallon (UK). This means the conversion factor from Gallon (UK) to Quart (US) is 4.803799702.

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

The formula to convert Gallon (UK) to Quart (US) is: qt = gal (UK) × 4.803799702. For example, to convert 10 Gallon (UK) to Quart (US), you would multiply 10 by 4.803799702.

What is a Gallon (UK)?