How to Convert Gallons to Fluid Ounces
To convert gallons to fluid ounces, multiply the value by 128.
The Formula
Fluid Ounces = Gallons × 128
Key Fact
1 gallon = 128 fluid ounces
Tip: To convert fluid ounces back to gallons, divide by 128.
Gallons to Fluid Ounces
Convert gallons (gal) to fluid ounces (fl oz) with formulas, examples, and conversion tables.
gal
fl oz
1 gal = 128 fl oz
Full precision:128 fl oz
Step-by-Step Solution
To convert 1 gallons to fluid ounces, we multiply by 128 because one gallon equals exactly 128 fluid ounces.
1 gallon = 128 fluid ounces
Since each gallon contains 128 fluid ounces, we multiply our value by this factor:
1 × 128 = 128 fluid ounces
So 1 gallons = 128 fluid ounces.
Quick check: 128 ÷ 128 = 1 gallons
Example Conversions
Example 1: 1 gal = 128 fl oz
1 × 128 = 128
1 × 128 = 128
Example 2: 5 gal = 640 fl oz
5 × 128 = 640
5 × 128 = 640
Example 3: 10 gal = 1280 fl oz
10 × 128 = 1280
10 × 128 = 1280
Gallons to Fluid Ounces Table
| Gallons | Fluid Ounces |
|---|---|
| 1 gal | 128 fl oz |
| 2 gal | 256 fl oz |
| 5 gal | 640 fl oz |
| 10 gal | 1280 fl oz |
| 20 gal | 2560 fl oz |
| 25 gal | 3200 fl oz |
| 50 gal | 6400 fl oz |
| 100 gal | 12800.01 fl oz |
| 250 gal | 32000.02 fl oz |
| 500 gal | 64000.03 fl oz |
| 1000 gal | 128000.07 fl oz |
1 Gallon in Other Units
| Unit | 1 gal = |
|---|---|
| Gallons to Milliliters | 3785.41 mL |
| Gallons to Liters | 3.7854 L |
| Gallons to Deciliters | 37.8541 dL |
| Gallons to Centiliters | 378.541 cL |
| Gallons to Teaspoons | 768 tsp |
| Gallons to Tablespoons | 255.999 tbsp |
| Gallons to Fluid Ounces | 128 fl oz |
| Gallons to Cups | 16 cup |
| Gallons to Pints | 8 pt |
| Gallons to Quarts | 4 qt |
| Gallons to Teaspoons (UK) | 639.493 tsp(UK) |
| Gallons to Tablespoons (UK) | 213.164 tbsp(UK) |
| Gallons to Cups (UK) | 13.3228 cup(UK) |