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UK Fluid Ounces to US Gallons (imp fl oz to gal) Converter

1 UK fluid ounce (imp fl oz) = 0.00750594 US gallons (gal). To convert UK fluid ounces to US gallons, multiply by 0.00750594: 25 imp fl oz × 0.00750594 = 0.187648 gal.

1 imp fl oz = 0.007505937 gal
Convert the other way: US Gallons to UK Fluid Ounces

Quick facts

How to convert UK fluid ounces to US gallons

  1. Take the value in UK fluid ounces.
  2. Multiply it by 0.00750594 (the number of US gallons in one UK fluid ounce).
  3. Round the result to the precision you need.
gal = imp fl oz × 0.00750594

Worked example: 25 imp fl oz × 0.00750594 = 0.187648 gal.

To convert US gallons back to UK fluid ounces, multiply by 133.228, or divide by 0.00750594.

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

UK Fluid Ounces to US Gallons conversion table

UK Fluid Ounces to US Gallons conversion table
UK Fluid Ounces [imp fl oz]US Gallons [gal]
0.01 imp fl oz0.0000750594 gal
0.1 imp fl oz0.0007505937 gal
1 imp fl oz0.007505937 gal
2 imp fl oz0.0150118741 gal
3 imp fl oz0.0225178111 gal
5 imp fl oz0.0375296852 gal
10 imp fl oz0.0750593703 gal
20 imp fl oz0.1501187407 gal
50 imp fl oz0.3752968517 gal
100 imp fl oz0.7505937034 gal
1000 imp fl oz7.5059370344 gal

imp fl oz to gal chart from 1 to 100

US Gallons to UK Fluid Ounces conversion table

US Gallons to UK Fluid Ounces conversion table
US Gallons [gal]UK Fluid Ounces [imp fl oz]
0.01 gal1.3322786954 imp fl oz
0.1 gal13.3227869541 imp fl oz
1 gal133.2278695406 imp fl oz
2 gal266.4557390813 imp fl oz
3 gal399.6836086219 imp fl oz
5 gal666.1393477032 imp fl oz
10 gal1332.2786954064 imp fl oz
20 gal2664.5573908128 imp fl oz
50 gal6661.3934770319 imp fl oz
100 gal13322.7869540638 imp fl oz
1000 gal133227.8695406382 imp fl oz

UK Fluid Ounces vs US Gallons

UK Fluid OunceUS Gallon
Symbolimp fl ozgal
Equals1 imp fl oz = 0.00750594 gal1 gal = 133.228 imp fl oz

What is a UK fluid ounce?

A UK imperial unit equal to 1/20 of an imperial pint (exactly 28.4130625 ml). Used in the UK and Canada on older recipes, drinks measures and some bottle labels.

What is a US gallon?

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

Frequently asked questions

How many US gallons are in a UK fluid ounce?

There are 0.00750594 US gallons in 1 UK fluid ounce (1 imp fl oz = 0.007505937 gal).

How many UK fluid ounces are in a US gallon?

There are 133.228 UK fluid ounces in 1 US gallon (1 gal = 133.2278695406 imp fl oz).

How do I convert UK fluid ounces to US gallons?

Multiply the number of UK fluid ounces by 0.00750594. For example, 10 imp fl oz × 0.00750594 = 0.0750594 gal. To convert back, multiply by 133.228.

What is 10 imp fl oz in US gallons?

10 imp fl oz = 0.0750594 gal.

What is 100 imp fl oz in US gallons?

100 imp fl oz = 0.750594 gal.

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