gallons to fluid ounces

1 gallon equals 128 fluid ounces.

Formula

To convert gallons to fluid ounces, multiply the number of gallons by 128.

1 gal = 128 fl oz, and 1 fl oz = 0.0078125 gal.

gallons to fluid ounces chart

gallonsfluid ounces
0.25 gallons32
0.5 gallons64
1 gallon128
2 gallons256
3 gallons384
4 gallons512
5 gallons640
10 gallons1280
20 gallons2560
50 gallons6400
100 gallons12800

Frequently asked questions

How many fluid ounces are in a gallon?

There are 128 fluid ounces in one gallon.

How many gallons are in a fluid ounce?

There are 0.0078125 gallons in one fluid ounce.