How Many Fluid Ounces in a Gallons (US)? Quick Answer
1 Gallons (US) =
128 Fluid Ounces
gal × 128 = oz
| Gallons (US) (gal) | Fluid Ounces (oz) |
|---|---|
| 1 gal | 128 oz |
| 2 gal | 256 oz |
| 3 gal | 384 oz |
| 4 gal | 512 oz |
| 5 gal | 640 oz |
| 10 gal | 1280 oz |
| 20 gal | 2560 oz |
| 50 gal | 6400 oz |
| 100 gal | 12800 oz |
Formula
fl oz = gal × 128
Use the interactive Gallons (US) to Fluid Ounces Converter →