Convert fluid ounces to gallons and gallons to fluid ounces instantly. Bidirectional volume converter with formula and common values.
To convert fluid ounces to gallons, divide by 128. Since one US gallon contains 128 fluid ounces, dividing by 128 yields the gallon equivalent.
| Fluid Ounces | Gallons |
|---|---|
| 16 | 0.125 |
| 32 | 0.25 |
| 64 | 0.5 |
| 96 | 0.75 |
| 128 | 1 |
| 192 | 1.5 |
| 256 | 2 |
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One fluid ounce equals approximately 0.0078125 gallons (1/128 of a gallon).
Divide the number of fluid ounces by 128. For example, 64 fl oz ÷ 128 = 0.5 gallons.
There are exactly 128 fluid ounces in one US gallon.
A common water jug holds 64 fl oz, which is exactly 0.5 gallons (a half gallon).