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

1 US gallon (gal) = 3.3307 UK quarts (imp qt). To convert US gallons to UK quarts, multiply by 3.3307: 15 gal × 3.3307 = 49.9605 imp qt.

1 gal = 3.3306967385 imp qt
Convert the other way: UK Quarts to US Gallons

Quick facts

How to convert US gallons to UK quarts

  1. Take the value in US gallons.
  2. Multiply it by 3.3307 (the number of UK quarts in one US gallon).
  3. Round the result to the precision you need.
imp qt = gal × 3.3307

Worked example (a car fuel tank): 15 gal × 3.3307 = 49.9605 imp qt.

To convert UK quarts back to US gallons, multiply by 0.300237, or divide by 3.3307.

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

US Gallons to UK Quarts conversion table

US Gallons to UK Quarts conversion table
US Gallons [gal]UK Quarts [imp qt]
0.01 gal0.0333069674 imp qt
0.1 gal0.3330696739 imp qt
1 gal3.3306967385 imp qt
2 gal6.661393477 imp qt
3 gal9.9920902155 imp qt
5 gal16.6534836926 imp qt
10 gal33.3069673852 imp qt
20 gal66.6139347703 imp qt
50 gal166.5348369258 imp qt
100 gal333.0696738516 imp qt
1000 gal3330.696738516 imp qt

gal to imp qt chart from 1 to 100

UK Quarts to US Gallons conversion table

UK Quarts to US Gallons conversion table
UK Quarts [imp qt]US Gallons [gal]
0.01 imp qt0.0030023748 gal
0.1 imp qt0.0300237481 gal
1 imp qt0.3002374814 gal
2 imp qt0.6004749628 gal
3 imp qt0.9007124441 gal
5 imp qt1.5011874069 gal
10 imp qt3.0023748138 gal
20 imp qt6.0047496275 gal
50 imp qt15.0118740688 gal
100 imp qt30.0237481376 gal
1000 imp qt300.2374813762 gal

US Gallons vs UK Quarts

US GallonUK Quart
Symbolgalimp qt
Equals1 gal = 3.3307 imp qt1 imp qt = 0.300237 gal

What is a US gallon?

A US customary unit equal to 4 quarts. Used in the US for fuel, milk, and paint.

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 US gallon?

There are 3.3307 UK quarts in 1 US gallon (1 gal = 3.3306967385 imp qt).

How many US gallons are in a UK quart?

There are 0.300237 US gallons in 1 UK quart (1 imp qt = 0.3002374814 gal).

How do I convert US gallons to UK quarts?

Multiply the number of US gallons by 3.3307. For example, 10 gal × 3.3307 = 33.307 imp qt. To convert back, multiply by 0.300237.

What is 10 gal in UK quarts?

10 gal = 33.307 imp qt.

What is 100 gal in UK quarts?

100 gal = 333.07 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