US fluid ounce to US gallon Converter
1 fl oz = 0.007813 gal — convert instantly with formula and table.
Type a value above and it converts instantly — no button to press, no page reload, and the math runs entirely in your browser.
Quick answer: one us fluid ounce equals 0.007813 US gallons. So to convert US fluid ounces to US gallons, multiply by 0.0078125.
How to convert US fluid ounces to US gallons
US gallons = US fluid ounces × 0.0078125
The US fluid ounce is about 29.57 ml — slightly larger than the UK fluid ounce. Eight fluid ounces make a US cup.
The US gallon is exactly 3.785411784 liters. American fuel prices are quoted per gallon, making this one of the most practical conversions for travelers.
US fluid ounce to US gallon conversion table
| US fluid ounce (fl oz) | US gallon (gal) |
|---|---|
| 0.01 fl oz | 0.00007813 gal |
| 0.1 fl oz | 0.00078125 gal |
| 0.25 fl oz | 0.001953 gal |
| 0.4 fl oz | 0.003125 gal |
| 0.75 fl oz | 0.005859 gal |
| 1.25 fl oz | 0.009766 gal |
| 1.75 fl oz | 0.013672 gal |
| 2.5 fl oz | 0.019531 gal |
| 3.5 fl oz | 0.027344 gal |
| 4.5 fl oz | 0.035156 gal |
| 6 fl oz | 0.046875 gal |
| 8 fl oz | 0.0625 gal |
| 10 fl oz | 0.078125 gal |
| 12 fl oz | 0.09375 gal |
| 14 fl oz | 0.109375 gal |
| 16 fl oz | 0.125 gal |
| 18 fl oz | 0.140625 gal |
| 20 fl oz | 0.15625 gal |
| 24 fl oz | 0.1875 gal |
| 26 fl oz | 0.203125 gal |
| 30 fl oz | 0.234375 gal |
| 35 fl oz | 0.273438 gal |
| 45 fl oz | 0.351563 gal |
| 55 fl oz | 0.429688 gal |
| 65 fl oz | 0.507813 gal |
| 75 fl oz | 0.585938 gal |
| 85 fl oz | 0.664063 gal |
| 95 fl oz | 0.742188 gal |
| 110 fl oz | 0.859375 gal |
| 125 fl oz | 0.976563 gal |
| 175 fl oz | 1.3672 gal |
| 250 fl oz | 1.9531 gal |
| 350 fl oz | 2.7344 gal |
| 450 fl oz | 3.5156 gal |
| 600 fl oz | 4.6875 gal |
| 750 fl oz | 5.8594 gal |
| 900 fl oz | 7.0313 gal |
| 1,500 fl oz | 11.7188 gal |
| 2,500 fl oz | 19.5313 gal |
| 10,000 fl oz | 78.125 gal |
Need the opposite direction? Use the US gallon to US fluid ounce converter, or read our complete guide to volume conversions for every formula in one place.
Frequently asked questions
How many US gallons are in one us fluid ounce?
One us fluid ounce equals 0.007813 US gallons. Multiply any us fluid ounce value by 0.0078125 to get US gallons.
What is 10 US fluid ounces in US gallons?
10 US fluid ounces equal 0.078125 US gallons (10 × 0.007813).
Is the us fluid ounce to us gallon conversion exact?
The conversion factor used here (0.0078125) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.