Gallons (US) to Fluid Ounces (US) Converter
1 gal = 128 fl oz. Type any value — it converts as you type, right in your browser.
=
128 fl oz
↔ Swap direction: fl oz to gal
Formula
fl oz = gal × 128
Gallons (US) to Fluid Ounces (US) conversion table
| Gallons (US) (gal) | Fluid Ounces (US) (fl oz) |
|---|---|
| 0.1 | 12.8 |
| 0.5 | 64 |
| 1 | 128 |
| 2 | 256 |
| 5 | 640 |
| 10 | 1,280 |
| 20 | 2,560 |
| 50 | 6,400 |
| 100 | 12,800 |
| 500 | 64,000 |
| 1,000 | 128,000 |
FAQ
How many fluid ounces (us) in a gallons (us)?
1 gal equals 128 fl oz.
How do I convert gal to fl oz?
Multiply the gallons (us) value by 128 to get fluid ounces (us).
What is the reverse conversion (fl oz to gal)?
1 fl oz equals 0.0078125 gal. Use our Fluid Ounces (US) to Gallons (US) converter for the other direction.