Fluid Ounces (US) to Gallons (US)
Convert Fluid Ounces (US) (fl oz) to Gallons (US) (gal) instantly, with a formula, reference table, and FAQ.
Formula
Fluid Ounces (US) × 0.0078125 = Gallons (US)
Fluid Ounces (US) (fl oz) and Gallons (US) (gal) are both units of volume. Use the converter above for any value, or check the quick-reference table below for common amounts.
Quick reference
| fl oz | gal |
|---|---|
| 1 fl oz | 0.0078125 gal |
| 5 fl oz | 0.0390625 gal |
| 10 fl oz | 0.078125 gal |
| 25 fl oz | 0.195313 gal |
| 50 fl oz | 0.390625 gal |
| 100 fl oz | 0.78125 gal |
| 500 fl oz | 3.90625 gal |
| 1000 fl oz | 7.8125 gal |
Frequently asked questions
How many Gallons (US) is one Fluid Ounces (US)?
One Fluid Ounces (US) (fl oz) equals 0.0078125 Gallons (US) (gal).
How do I convert Fluid Ounces (US) to Gallons (US)?
Multiply the value in Fluid Ounces (US) by 0.0078125 to get Gallons (US).
Is the Fluid Ounces (US) to Gallons (US) conversion exact?
Yes — this converter uses the internationally defined conversion factor between fluid ounces (us) and gallons (us), accurate to several decimal places.