Table Of Contents
Gallons to fluid ounces Conversion
1 gallons (gal) is equal to 128 fluid ounces (fl oz).
1 gal = 128 fl oz
or
1 fl oz = 0.0078125 gal
Formula
To convert a volume from gallons (gal) to fluid ounces (fl oz), multiply the volume in gallons by 128
v(fl oz) = v(gal) × 128
Examples:
Convert 10 gallons to fluid ounces:
v(fl oz) = 10gal × 128 = 1280 fl oz
Conversion table
| Gallons (gal) | Fluid ounces (fl oz) |
|---|---|
| 1 gal | 128 fl oz |
| 2 gal | 256 fl oz |
| 3 gal | 384 fl oz |
| 5 gal | 640 fl oz |
| 10 gal | 1280 fl oz |
| 15 gal | 1920 fl oz |
| 20 gal | 2560 fl oz |
| 25 gal | 3200 fl oz |
| 50 gal | 6400 fl oz |
| 100 gal | 12800 fl oz |
| 250 gal | 32000 fl oz |
| 500 gal | 64000 fl oz |
| 1000 gal | 128000 fl oz |
| Fluid ounces (fl oz) | Gallons (gal) |
|---|---|
| 1 fl oz | 0.0078125 gal |
| 2 fl oz | 0.015625 gal |
| 3 fl oz | 0.0234375 gal |
| 5 fl oz | 0.0390625 gal |
| 10 fl oz | 0.078125 gal |
| 15 fl oz | 0.1171875 gal |
| 20 fl oz | 0.15625 gal |
| 25 fl oz | 0.1953125 gal |
| 50 fl oz | 0.390625 gal |
| 100 fl oz | 0.78125 gal |
| 250 fl oz | 1.953125 gal |
| 500 fl oz | 3.90625 gal |
| 1000 fl oz | 7.8125 gal |
Frequently asked questions
How do I convert gallons to fluid ounces?
Multiply the value in gallons by 128 to get the result in fluid ounces. For example, 5 gal × 128 = 640 fl oz.
How many fluid ounces are in 1 gallons?
1 gallons (gal) is equal to 128 fluid ounces (fl oz).
How do I convert fluid ounces back to gallons?
Use the inverse operation: divide the value in fluid ounces by 128 to get the result in gallons.
How accurate is the gallons to fluid ounces conversion?
The converter multiplies by the conversion factor 128 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
