Free instant fl oz → gal converter. No signup, no uploads — everything is calculated privately in your browser.
1 fl oz = 0.00781249 gallons
Free and instant — every calculation runs in your browser. Nothing is uploaded.
1 fluid ounce equals 0.00781249 gallons. To convert fluid ounces to gallons, multiply the value by this factor.
Formula: value ÷ 128
Prefer to skip the math? Type any value in the converter above and it converts instantly.
| Fluid Ounces (fl oz) | Gallons (gal) |
|---|---|
| 1 fl oz | 0.00781249 gal |
| 2 fl oz | 0.015625 gal |
| 5 fl oz | 0.0390625 gal |
| 10 fl oz | 0.0781249 gal |
| 25 fl oz | 0.195312 gal |
| 50 fl oz | 0.390625 gal |
| 100 fl oz | 0.781249 gal |
| 250 fl oz | 1.95312 gal |
| 500 fl oz | 3.90625 gal |
| 1,000 fl oz | 7.81249 gal |
Enter the value above and the result appears instantly — the calculation runs entirely in your browser. Formula: value ÷ 128.
1 fluid ounce = 0.00781249 gallons (shown to 6 significant figures — the converter itself computes at full precision). The reverse factor is 1 gallon = 128 fluid ounces.
1 fl oz = 0.00781249 gal; 10 fl oz = 0.0781249 gal; 100 fl oz = 0.781249 gal. Use the full conversion table below for more reference values.
No, and the difference matters. This converter uses US customary measures: 1 US cup = 236.588 mL and 1 US gallon = 3.785411784 L. An imperial cup is 284 mL and an imperial gallon is 4.546 L, so recipes from the UK may need adjusting.