US Fluid Ounces to US Gallons
1 us fluid ounce = 0.0078125 us gallons (gal)
Convert us fluid ounces to us gallons instantly. 1 us fluid ounce = 0.0078125 us gallons. Free, accurate, with conversion table and formula.
US Fluid Ounce (fl oz)
US Gallon (gal)
| Unit | 1 fl oz equals |
|---|---|
| Milliliter (ml) | 29.5735 |
| Liter (L) | 0.0295735 |
| Cubic Meter (m³) | 0.0000295735 |
| Cubic Centimeter (cm³) | 29.5735 |
| US Teaspoon (tsp) | 6 |
| US Tablespoon (tbsp) | 1.99999 |
| US Fluid Ounce (fl oz) | 1 |
| US Cup (cup) | 0.123223 |
| US Pint (pt) | 0.0625 |
| US Quart (qt) | 0.03125 |
| US Gallon (gal) | 0.0078125 |
| Imperial Gallon (imp gal) | 0.00650526 |
How to convert us fluid ounces to us gallons
- 1Take your value in us fluid ounces (fl oz).
- 2Multiply by 0.0078125.
- 3The result is your value in us gallons (gal).
US Fluid Ounces to US Gallons conversion table
| US Fluid Ounces (fl oz) | US Gallons (gal) |
|---|---|
| 1 | 0.0078125 |
| 2 | 0.015625 |
| 5 | 0.0390625 |
| 10 | 0.078125 |
| 25 | 0.195312 |
| 50 | 0.390625 |
| 100 | 0.78125 |
| 250 | 1.95312 |
| 500 | 3.90625 |
| 1,000 | 7.8125 |
Frequently asked
How many us gallons are in a us fluid ounce?
1 us fluid ounce equals 0.0078125 us gallons (gal).
How do I convert us fluid ounces to us gallons?
Multiply the number of us fluid ounces by 0.0078125 to get us gallons.
What is 10 us fluid ounces in us gallons?
10 fl oz equals 0.07812 gal.
What is 100 us fluid ounces in us gallons?
100 fl oz equals 0.7812 gal.
How do I convert us gallons back to us fluid ounces?
Multiply us gallons by 128 (the reciprocal) or use the swap button above.
Where you'll actually use this
Volume measures three-dimensional capacity — how much liquid a container holds or how much space an object occupies. Metric uses liters and milliliters; imperial uses gallons, quarts, pints, cups, and fluid ounces.
- Cooking
US recipes use cups and tablespoons; metric recipes use ml. A US cup is 236.6 ml — not 250 ml as in metric cups.
- Fuel
Pump prices show gallons in the US, liters almost everywhere else.
- Beverages
A US fluid ounce (29.57 ml) is slightly smaller than a UK fluid ounce (28.41 ml).
Common mistakes to avoid
- US gallon ≠ UK gallon
A US gallon is 3.785 L, a UK (imperial) gallon is 4.546 L — about 20% larger.
- Cups aren't universal
US cup = 236.6 ml. UK cup = 284 ml. Metric cup = 250 ml. Match the recipe origin.
Did you know?
At 4 °C exactly one liter of pure water weighs one kilogram — the original metric definition.
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