This converter allows you to quickly convert us fluid ounces (fl oz)
into us gallons (gal).
Simply enter a value, choose your units, and get an instant, accurate result.
US Fluid Ounce to US Gallon Conversion Table
US Fluid Ounce (fl oz)
US Gallon (gal)
1
0.007813
2
0.015625
5
0.039063
10
0.078125
20
0.15625
50
0.390625
100
0.78125
200
1.5625
500
3.90625
1000
7.8125
2000
15.625
5000
39.0625
10000
78.125
20000
156.25
50000
390.625
100000
781.25
200000
1,562.5
500000
3,906.25
1000000
7,812.5
2000000
15,625
How to convert US Fluid Ounces to US Gallons?
To convert us fluid ounces to us gallons, multiply by the conversion factor:
Example: Convert 10 US Fluid Ounces to US Gallons
Frequently asked questions
How many us gallons are in 1 us fluid ounce?
1 US Fluid Ounce (fl oz) equals 0.0078125 us gallons (gal).
How many us fluid ounces are in 1 us gallon?
1 US Gallon (gal) equals 128 us fluid ounces (fl oz).
How do I convert us gallons back to us fluid ounces?
Use the swap button above to flip the converter, or type a value directly into the "US Gallon" field — this page converts in both directions instantly as you type, with no submit button needed.
Which is larger, us fluid ounce or us gallon?
1 US Gallon is larger — it takes 128 us fluid ounces to equal 1 us gallon.