US Fluid Ounces to US Gallons
1 US Fluid Ounce = 0.0078125 US Gallons
Common amounts:
About the us fluid ounce to us gallon conversion
The us fluid ounce (fl oz (US)) and the us gallon (gal (US)) are both units of volume. Convert between volume units — milliliters, liters, US and UK gallons, quarts, pints, cups and fluid ounces.
To convert us fluid ounces to us gallons, multiply by 0.0078125. To go back, multiply us gallons by 128.
Reference table
| US Fluid Ounces | US Gallons |
|---|---|
| 1 fl oz (US) | 0.0078125 gal (US) |
| 5 fl oz (US) | 0.039063 gal (US) |
| 10 fl oz (US) | 0.078125 gal (US) |
| 25 fl oz (US) | 0.19531 gal (US) |
| 50 fl oz (US) | 0.39063 gal (US) |
| 100 fl oz (US) | 0.78125 gal (US) |
Need the reverse conversion? Convert US Gallons to US Fluid Ounces.
Convert US Fluid Ounce to other volume units
Frequently asked questions
- How many us gallons is 1 us fluid ounce?
- 1 US Fluid Ounce equals 0.0078125 US Gallons. To go the other way, 1 US Gallon equals 128 US Fluid Ounces.
- What's the formula to convert us fluid ounces to us gallons?
- Multiply the number of us fluid ounces by 0.0078125 to get us gallons. For example, 10 us fluid ounces × 0.0078125 = 0.078125 us gallons.
- Does this converter handle decimals and very large numbers?
- Yes. Type any real number, including decimals or values in the trillions. Math runs entirely in your browser — no server round-trip, no sign-up, and nothing to install.