Convert quarts to UK gallons

1 qt=0.2082gal (UK)

Use the converter below to change any quarts value into UK gallons instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.20817

Conversion formula

Forward

UK gallons = quarts × 0.2082

Reverse

quarts = UK gallons × 4.8038

Example: 10 qt × 0.2082 = 2.08169 gal (UK).

About both units

From

Quart

The US liquid quart equals 946 millilitres — 2 pints or 1/4 US gallon. The UK imperial quart (1.137 L) is larger, like the other UK liquid units. Quarts are used in US cooking recipes and for motor-oil bottles.

Real-world: A US quart of motor oil is 946 ml. A "quart of milk" in the US ≈ 1 L. UK "quart" is rare today.

Read full quart reference →

UK Gallon

gal (UK)

The UK imperial gallon equals 4.54609 litres exactly. Defined in 1824 as the volume of 10 pounds of water at 62 °F. Still used for fuel economy reporting in the UK and some older industrial contexts. The UK imperial gallon is about 20% larger than the US gallon.

Real-world: UK petrol sold by litre since 1995, but economy is quoted in UK mpg: a diesel car at 60 mpg (UK) uses 4.7 L/100 km.

Read full uk gallon reference →

Quart to UK Gallon conversion table

Common quarts to UK gallons values for quick reference.

Quart (qt)	UK Gallon (gal (UK))
1 qt	0.2082 gal (UK)
2 qt	0.4163 gal (UK)
5 qt	1.04084 gal (UK)
10 qt	2.08169 gal (UK)
20 qt	4.16337 gal (UK)
50 qt	10.4084 gal (UK)
100 qt	20.8169 gal (UK)
200 qt	41.6337 gal (UK)
500 qt	104.084 gal (UK)
1,000 qt	208.169 gal (UK)

Tips & common mistakes

Quick tips

1 US quart = 2 US pints = 946 ml ≈ 1 L.
1 UK quart = 2 UK pints = 1137 ml.
Quarts appear more often in the US than UK in everyday usage.

Avoid these

Treating US and UK quarts as equal — 20% off.
Using quarts outside US — most metric countries do not use them at all.
Confusing quart (volume) with quarter (mass unit in older UK contexts).

Frequently asked questions

How many UK gallons in a quart?

One quart equals 0.2082 UK gallons.

How do I convert quarts to UK gallons?

Multiply the quart value by 0.2082 to get the equivalent in UK gallons.

What is 100 quarts in UK gallons?

100 quarts equals 20.8169 UK gallons.

Is a quart bigger than a uk gallon?

No. 1 quart equals 0.2082 UK gallons, so one quart is smaller.

How to convert quarts to UK gallons without a calculator?

Multiply by 0.21 for a quick estimate; use a calculator for precise results.

Related volume conversions

📊 See full comparison matrix →

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