US gallons to US fluid ounces Converter
Convert US gallons to US fluid ounces instantly. One US gallon equals 128 US fluid ounces, so you can type any value in gal and read the answer in…
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Convert US gallons to US fluid ounces instantly. One US gallon equals 128 US fluid ounces, so you can type any value in gal and read the answer in fl oz. The page also shows a conversion table and the exact formula used.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
1 gal = 128 fl oz
With the default inputs (value in US gallons = 1 gal), the results are: US fluid ounces 128 fl oz.
US gallons to US fluid ounces conversion table
Reference table based on the example values; it is not your calculation result.
| US gallons (gal) | US fluid ounces (fl oz) |
|---|---|
| 1 | 128 |
| 2 | 256 |
| 5 | 640 |
| 10 | 1,280 |
| 25 | 3,200 |
| 50 | 6,400 |
| 100 | 12,800 |
| 500 | 64,000 |
| 1,000 | 128,000 |
Frequently asked questions
How many US fluid ounces are in one US gallon?
1 US gallon = 128 US fluid ounces.
What is the formula to convert US gallons to US fluid ounces?
Multiply the value in US gallons by 128.
How do I convert US fluid ounces back to US gallons?
1 US fluid ounce = 0.0078125 US gallons.
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