This converter allows you to quickly convert imperial gallons (gal)
into us fluid ounces (fl oz).
Simply enter a value, choose your units, and get an instant, accurate result.
Imperial Gallon to US Fluid Ounce Conversion Table
Imperial Gallon (gal)
US Fluid Ounce (fl oz)
1
153.72159
2
307.443181
5
768.607952
10
1,537.215905
20
3,074.431809
50
7,686.079523
100
15,372.159046
200
30,744.318093
500
76,860.795232
1000
153,721.590465
2000
307,443.180929
5000
768,607.952323
10000
1,537,215.904646
20000
3,074,431.809292
50000
7,686,079.523231
100000
15,372,159.046462
200000
30,744,318.092924
500000
76,860,795.232311
1000000
153,721,590.464621
2000000
307,443,180.929243
How to convert Imperial Gallons to US Fluid Ounces?
To convert imperial gallons to us fluid ounces, multiply by the conversion factor:
Example: Convert 10 Imperial Gallons to US Fluid Ounces
Frequently asked questions
How many us fluid ounces are in 1 imperial gallon?
How do I convert us fluid ounces back to imperial gallons?
Use the swap button above to flip the converter, or type a value directly into the "US Fluid Ounce" field — this page converts in both directions instantly as you type, with no submit button needed.
Which is larger, imperial gallon or us fluid ounce?
1 Imperial Gallon is larger — it takes 153.722 us fluid ounces to equal 1 imperial gallon.