US gallons to US fluid ounces
Convert us gallon to us fluid ounce — instant, free, with the formula shown.
1 gal (US)=128 fl oz (US)
How to convert us gallon to us fluid ounce
To convert us gallon to us fluid ounce, multiply by 128:
fl oz (US) = gal (US) × 128
For example, 10 gal (US) × 128 = 1280 fl oz (US).
gal (US) to fl oz (US) conversion table
| US gallons (gal (US)) | US fluid ounces (fl oz (US)) |
|---|---|
| 1 gal (US) | 128 fl oz (US) |
| 2 gal (US) | 256 fl oz (US) |
| 5 gal (US) | 640 fl oz (US) |
| 10 gal (US) | 1280 fl oz (US) |
| 25 gal (US) | 3200 fl oz (US) |
| 50 gal (US) | 6400 fl oz (US) |
| 100 gal (US) | 12800 fl oz (US) |
| 250 gal (US) | 32000 fl oz (US) |
| 500 gal (US) | 64000 fl oz (US) |
| 1000 gal (US) | 128000 fl oz (US) |
Other us gallon conversions
Convert to us fluid ounce from another unit
gal (US) to fl oz (US) — frequently asked
How many US fluid ounces are in 1 us gallon?
1 us gallon = 128 US fluid ounces (gal (US) × 128 = fl oz (US)).
What is the formula to convert us gallon to us fluid ounce?
Multiply your us gallon value by 128 to get us fluid ounce.
How do I convert 10 US gallons to US fluid ounces?
10 gal (US) = 1280 fl oz (US). For 100 gal (US) the answer is 12800 fl oz (US). Use the calculator on this page for any other value.
When to convert us gallon to us fluid ounce
1Cooking and recipes (cups ↔ mL, tbsp ↔ tsp)
2Fuel economy and tank capacity (gal ↔ L)
3Brewing and beverages (pint, fl oz)
4Industrial fluid handling (m³, barrels)
Volume conversion — common questions
Is a US gallon the same as a UK gallon?
No. A US gallon = 3.785 L while a UK (imperial) gallon = 4.546 L. UK gallons are about 20% larger.
How many milliliters in a teaspoon?
1 US teaspoon ≈ 4.929 mL. For cooking, 5 mL is a common rounded value.
How many liters in 1 cubic meter?
Exactly 1,000 L. 1 m³ = 1000 L because 1 L is defined as 1 dm³.
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