Convert gallons to fl oz

US gallons to US fluid ounces. Enter a value to convert, or use the gallons to fl oz chart further down the page.

1 gal = 128 fl oz

1 US gallon equals 128 US fluid ounces. Going the other way, 1 US fluid ounce = 0.0078125 US gallons.

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Check this before you rely on it. This converter is provided free and without warranty, and its results are not professional advice.

How to convert gallons to fl oz

To convert US gallons to US fluid ounces, multiply the US gallon value by 128. You can also divide by 0.0078125 to get the same answer.

fl oz = gal × 128

Convert 15 gal to US fluid ounces:

15 gal = 1,920 fl oz

Use this gallons to fl oz table for quick reference without typing anything.

The US liquid gallon is exactly 3.785411784 liters, or 231 cubic inches. It is about 17% smaller than the imperial gallon.

The US fluid ounce is exactly 29.5735295625 milliliters — one sixteenth of a US pint. It measures volume, not weight.

How many fl oz are in an US gallon?

1 gallons equals 128 fl oz. Going the other way, 1 fl oz is 0.0078125 gallons.

How do you convert gallons to fl oz?

To convert US gallons to US fluid ounces, multiply the US gallon value by 128. You can also divide by 0.0078125 to get the same answer.

What is 10 gallons in fl oz?

10 gallons equals 1,280 fl oz. The conversion chart on this page lists the other values people look up most often.