VOLUME CONVERSION
Imperial gallon to US fluid ounce.
Convert imperial gallon (gal (UK)) to us fluid ounce (fl oz (US)), with the math explained.
1 gal (UK) = 153.7215905 fl oz (US)
US and UK gallons, pints, and fluid ounces are different sizes. A metric cup is 250 mL; a US customary cup is 236.5882365 mL.
THE MATH, MADE SIMPLE
How to convert imperial gallon to us fluid ounce
Multiply your imperial gallon value by 153.721590465 to get the equivalent in us fluid ounce. Both units are normalized through the liter.
fl oz (US) = gal (UK) × 153.721590510 gal (UK) = 1,537.21590465 fl oz (US)
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.US and UK gallons, pints, and fluid ounces are different sizes. A metric cup is 250 mL; a US customary cup is 236.5882365 mL.
QUICK REFERENCE
gal (UK) to fl oz (US) conversion table
| Imperial gallon (gal (UK)) | US fluid ounce (fl oz (US)) |
|---|---|
| 1 gal (UK) | 153.721590465 fl oz (US) |
| 2 gal (UK) | 307.443180929 fl oz (US) |
| 5 gal (UK) | 768.607952323 fl oz (US) |
| 10 gal (UK) | 1,537.21590465 fl oz (US) |
| 20 gal (UK) | 3,074.43180929 fl oz (US) |
| 50 gal (UK) | 7,686.07952323 fl oz (US) |
| 100 gal (UK) | 15,372.1590465 fl oz (US) |
| 500 gal (UK) | 76,860.7952323 fl oz (US) |
| 1,000 gal (UK) | 153,721.590465 fl oz (US) |
About the imperial gallon
The imperial gallon (gal (UK)) is a unit of volume. One imperial gallon equals 4.54609 liter (base unit) in this calculator.
All imperial gallon conversionsAbout the us fluid ounce
The us fluid ounce (fl oz (US)) is a unit of volume. One us fluid ounce equals 0.0295735295625 liter (base unit) in this calculator.
All us fluid ounce conversionsCommon questions
What is 1 gal (UK) in fl oz (US)?
One imperial gallon equals 153.721590465 fl oz (US). Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
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