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UK Gallons to UK Quarts (imp gal to imp qt) Converter

1 UK gallon (imp gal) = 4 UK quarts (imp qt). To convert UK gallons to UK quarts, multiply by 4: 25 imp gal × 4 = 100 imp qt.

1 imp gal = 4 imp qt
Convert the other way: UK Quarts to UK Gallons

Quick facts

How to convert UK gallons to UK quarts

  1. Take the value in UK gallons.
  2. Multiply it by 4 (the number of UK quarts in one UK gallon).
  3. Round the result to the precision you need.
imp qt = imp gal × 4

Worked example: 25 imp gal × 4 = 100 imp qt.

To convert UK quarts back to UK gallons, multiply by 0.25, or divide by 4.

Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).

UK Gallons to UK Quarts conversion table

UK Gallons to UK Quarts conversion table
UK Gallons [imp gal]UK Quarts [imp qt]
0.01 imp gal0.04 imp qt
0.1 imp gal0.4 imp qt
1 imp gal4 imp qt
2 imp gal8 imp qt
3 imp gal12 imp qt
5 imp gal20 imp qt
10 imp gal40 imp qt
20 imp gal80 imp qt
50 imp gal200 imp qt
100 imp gal400 imp qt
1000 imp gal4000 imp qt

imp gal to imp qt chart from 1 to 100

UK Quarts to UK Gallons conversion table

UK Quarts to UK Gallons conversion table
UK Quarts [imp qt]UK Gallons [imp gal]
0.01 imp qt0.0025 imp gal
0.1 imp qt0.025 imp gal
1 imp qt0.25 imp gal
2 imp qt0.5 imp gal
3 imp qt0.75 imp gal
5 imp qt1.25 imp gal
10 imp qt2.5 imp gal
20 imp qt5 imp gal
50 imp qt12.5 imp gal
100 imp qt25 imp gal
1000 imp qt250 imp gal

UK Gallons vs UK Quarts

UK GallonUK Quart
Symbolimp galimp qt
Equals1 imp gal = 4 imp qt1 imp qt = 0.25 imp gal

What is a UK gallon?

The imperial gallon, defined as exactly 4.54609 litres (UK Weights and Measures Act 1985); about 20% larger than the US gallon. Used in the UK and Canada for fuel economy (miles per gallon), garden and aquarium volumes, and older fuel prices.

What is a UK quart?

A UK imperial unit equal to 2 imperial pints. Found in older UK and Canadian recipes and measuring jugs.

Frequently asked questions

How many UK quarts are in a UK gallon?

There are 4 UK quarts in 1 UK gallon (1 imp gal = 4 imp qt).

How many UK gallons are in a UK quart?

There are 0.25 UK gallons in 1 UK quart (1 imp qt = 0.25 imp gal).

How do I convert UK gallons to UK quarts?

Multiply the number of UK gallons by 4. For example, 10 imp gal × 4 = 40 imp qt. To convert back, multiply by 0.25.

What is 10 imp gal in UK quarts?

10 imp gal = 40 imp qt.

What is 100 imp gal in UK quarts?

100 imp gal = 400 imp qt.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

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First published 28 October 2026 · Last reviewed 5 November 2026