This converter allows you to quickly convert us gallons (gal)
into imperial fluid ounces (fl oz).
Simply enter a value, choose your units, and get an instant, accurate result.
US Gallon to Imperial Fluid Ounce Conversion Table
US Gallon (gal)
Imperial Fluid Ounce (fl oz)
1
133.22787
2
266.455739
5
666.139348
10
1,332.278695
20
2,664.557391
50
6,661.393477
100
13,322.786954
200
26,645.573908
500
66,613.93477
1000
133,227.869541
2000
266,455.739081
5000
666,139.347703
10000
1,332,278.695406
20000
2,664,557.390813
50000
6,661,393.477032
100000
13,322,786.954064
200000
26,645,573.908128
500000
66,613,934.770319
1000000
133,227,869.540638
2000000
266,455,739.081276
How to convert US Gallons to Imperial Fluid Ounces?
To convert us gallons to imperial fluid ounces, multiply by the conversion factor:
Example: Convert 10 US Gallons to Imperial Fluid Ounces
Frequently asked questions
How many imperial fluid ounces are in 1 us gallon?
How do I convert imperial fluid ounces back to us gallons?
Use the swap button above to flip the converter, or type a value directly into the "Imperial Fluid Ounce" field — this page converts in both directions instantly as you type, with no submit button needed.
Which is larger, us gallon or imperial fluid ounce?
1 US Gallon is larger — it takes 133.228 imperial fluid ounces to equal 1 us gallon.