Convert US Gallon to US Fluid Ounce
1 us gallon = 128 us fluid ounces (gal to fl oz).
The us gallon (gal) and the us fluid ounce (fl oz) both measure volume. A us gallon is larger than a us fluid ounce — one us gallon contains 128 us fluid ounces. Going the other way, one us fluid ounce is 0.0078125 us gallons. The converter above does this in real time, and the reference chart lists the values that come up most often.
1 gal = 128 fl oz
How to convert US Gallons to US Fluid Ounces
Multiply the us gallon value by 128 to get us fluid ounces.
Example: 10 us gallons = 1,280 us fluid ounces.
US Gallon to US Fluid Ounce Conversion Chart
| US Gallons | US Fluid Ounces |
|---|---|
| 1 gal | 128 fl oz |
| 2 gal | 256 fl oz |
| 3 gal | 384 fl oz |
| 5 gal | 640 fl oz |
| 10 gal | 1,280 fl oz |
| 20 gal | 2,560 fl oz |
| 25 gal | 3,200 fl oz |
| 50 gal | 6,400 fl oz |
| 100 gal | 12,800 fl oz |
| 1000 gal | 128,000 fl oz |
Frequently Asked Questions
- How many us fluid ounces are in a us gallon?
- There are 128 us fluid ounces in 1 us gallon.
- How do you convert us gallons to us fluid ounces?
- Multiply the us gallon value by 128 to get us fluid ounces.
- What is 5 us gallons in us fluid ounces?
- 5 us gallons equals 640 us fluid ounces.
- What is 100 us gallons in us fluid ounces?
- 100 us gallons equals 12,800 us fluid ounces.
- What is 1 us fluid ounce in us gallons?
- 1 us fluid ounce equals 0.0078125 us gallons.
- Is this us gallon to us fluid ounce converter free?
- Yes. The converter is free, needs no sign-up, and runs entirely in your browser — the values you enter never leave your device.
Related Conversions
- US Fluid Ounce to US Gallon (reverse)
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- US Gallon to Liter
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