# How Many Ounces in a Gallon How many ounces are in a gallon? The answer will depend on how you want to measure them. If you want to convert ounces into gallons, the answer is 128 ounces in 1 gallon. On the other hand, if you want to know how many gallons are in 1 ounce, the answer is 0.125 gallons per ounce. To make things even more confusing, you can also look at ounces to gallons as meaning ounces per gallon and vice versa. Hopefully, this article will help clear up some of the confusion about measurements and their relationship to each other!

## How Many Ounces Are There in a Gallon?

If you’re having trouble remembering how many ounces are in a gallon, try picturing it as half of one quart and then cutting that number in half again. While water weighs 8.34 pounds per gallon, milk weighs 6 pounds per gallon, beer is 5.5 pounds per gallon and wine comes out to around 4.6 pounds per gallon. You can also find an online calculator to help you convert ounces into gallons, or vice versa. Just remember that there are 128 ounces in a gallon (3 x 32). So if you want to know how many ounces there are in 1/2 gallon, just divide by 2! The other ounces remain unchanged. One ounce is approximately equal to 29.57 milliliters, so knowing how many ounces are in a gallon will let you figure out pretty easily how much fluid weight is in any given volume of liquid—or at least what your last gym class teacher told you was true…

Volume vs. WeightIt’s important to understand that when you purchase vegetable oil, it’s sold by weight. For example, if you buy a gallon of vegetable oil at \$4 per gallon, you will be paying for about 8 pounds of vegetable oil. To get an idea of how many ounces are in a gallon, weigh your container on a kitchen scale and take note of how many ounces your measurement contains.

Next, divide that number by 16 to determine how many fluid ounces there are per gallon.

Example: 4 pounds x 16 ounces = 64 ounces ÷ 16 ounces per gallon = 4 gallons There are 128 fluid ounces in one U.S. gallon, so multiply your result by 2 to find out how many ounces are in a gallon. (128 ounces x 2) = 256 ounces One gallon is equal to 256 ounces. If you bought a 5-gallon bucket of vegetable oil, then you paid \$20 or 32 cents per ounce. But remember, that’s only if you’re buying by weight. If you’re purchasing based on volume measurements such as quarts or gallons, then it costs more than 32 cents per ounce because volume measurements don’t account for density or thickness like weight does. In fact, if you purchased 1 quart of liquid oil at \$5/quart but actually received 2 quarts due to its thickness and density, then your cost would actually be closer to 50 cents/ounce!

## Ways To Measure Liquid Volume

One of our favorite kitchen tools is an extra-long measuring cup because it gives us an easy way to measure ingredients for recipes like salads and soups. Since one quart equals 32 ounces, four quarts are 128 ounces, and two gallons equal 128 quarts, it’s fairly easy to do some quick math to figure out how many ounces in a gallon. A helpful rule of thumb is that there are four cups (16 ounces) in every quart and 16 cups (128 ounces) in every gallon. That means we can add together those numbers—four cups plus 16 cups equals 20 cups total—and divide by 4 (the number of cups per quart), leaving us with five gallons as our answer.

## Calculating the Number of Ounces In A Gallon Of Water

The average gallon of water weighs about 8.35 pounds and holds 128 fluid ounces. The amount of ounces in a gallon of water depends on how much air pressure is exerted on it; at higher elevations, where there’s less air pressure, there are fewer ounces per gallon than at sea level. To calculate how many ounces are in your local gallon of water, multiply 128 by your elevation in feet above sea level to get an approximate number. For example, if you live near sea level (elevation 0), then 128 x 0 = 0; so there are zero ounces of liquid per gallon at that elevation.