Convert gallon (us)s to fluid ounce (us)s
1 gal = 128 fl oz — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
128fl oz
1 gal = 128 fl oz
How to convert gallon (us)s to fluid ounce (us)s
Multiply the number of gallon (us)s by 128 to get fluid ounce (us)s.
The exact factor is 128 .
Gallon (US): The US liquid gallon: 231 in³ exactly. About 17% smaller than the imperial gallon.
Gallon (US) to Fluid ounce (US) conversion table
| Gallon (US)s (gal) | Fluid ounce (US)s (fl oz) |
|---|---|
| 1 gal | 128 |
| 2 gal | 256 |
| 3 gal | 384 |
| 5 gal | 640 |
| 10 gal | 1280 |
| 20 gal | 2560 |
| 25 gal | 3200 |
| 50 gal | 6400 |
| 100 gal | 12 800 |
| 250 gal | 32 000 |
| 500 gal | 64 000 |
| 1000 gal | 128 000 |
Fluid ounce (US) to Gallon (US) conversion table
| Fluid ounce (US)s (fl oz) | Gallon (US)s (gal) |
|---|---|
| 1 fl oz | 0.007 812 5 |
| 2 fl oz | 0.015 625 |
| 3 fl oz | 0.023 437 5 |
| 5 fl oz | 0.039 062 5 |
| 10 fl oz | 0.078 125 |
| 20 fl oz | 0.156 25 |
| 25 fl oz | 0.195 312 5 |
| 50 fl oz | 0.390 625 |
| 100 fl oz | 0.781 25 |
| 250 fl oz | 1.953 125 |
| 500 fl oz | 3.906 25 |
| 1000 fl oz | 7.8125 |
Frequently asked
How many fluid ounce (us)s are in a gallon (us)?
One gallon (us) equals 128 fluid ounce (us)s (gal → fl oz). That figure is exact, not rounded.
How do you convert gallon (us)s to fluid ounce (us)s?
Multiply the number of gallon (us)s by 128 to get fluid ounce (us)s.
What is 1 fl oz in gallon (us)s?
One fluid ounce (us) is 0.0078125 gallon (us)s.
What is 10 gal in fl oz?
10 gal = 1280 fl oz.
What exactly is a gallon (us)?
The US liquid gallon: 231 in³ exactly. About 17% smaller than the imperial gallon.