How many ounces are in a gallon? There are 128 US fluid ounces in a US gallon. If you're in the UK, you'll find a gallon measures 160 UK fluid ounces. This is due to the fact that the US liquid gallon is …

Find the answer to how many oz in a gal with our guide for US, Imperial (UK), and Metric conversions, plus charts, FAQs, and more!

The conversion factor for gallon to ounces is 128, which means that one gallon is equal to 128 ounces. To convert gallon to oz, we can use the following formula:

How Many Fluid Ounces Are in a Gallon? There are 128 fluid ounces in a gallon, which is why we use this value in the formula above. 1 gal = 128 fl oz Gallons and fluid ounces are both units used to …

Oct 28, 2025 · Discover exactly how many ounces are in a gallon of water with this easy-to-follow guide. Learn quick conversions for fluid ounces, cups, pints, quarts, and liters, plus handy tables, tips, and …

Aug 14, 2025 · 1 Quick Answer: How Many Ounces in a Gallon? If you're short on time, here's the essential answer: Quick Tip: Most Americans only need to remember 128 ounces per gallon. I've …

Sep 30, 2025 · The question how many ounces in a gallon has a clear answer: 128 fluid ounces in a U.S. gallon and 160 fluid ounces in a U.K. imperial gallon. This difference, rooted in historical …

Instant free online tool for fluid ounce (US) to gallon (US) conversion or vice versa. The fluid ounce (US) [fl oz (US)] to gallon (US) [gal (US)] conversion table and conversion steps are also listed.

Oct 13, 2025 · One gallon equals 128 ounces, and yes, that number shows up more often than you think. The ounces to gallons conversion formula is simple: This conversion helps you calculate any …

Use this easy and mobile-friendly calculator to convert between ounces and gallons. Just type the number of ounces into the box and hit the Calculate button.