Gallons and quarts are both U.S. customary units. Canada uses liters, for tea’s sake. But in the U.S., we stick with our proud, confusing system.
One gallon equals 128 fluid ounces. That’s 16 cups. A quart? Exactly 32 fluid ounces. So 4 quarts = 1 gallon. It’s all about multiples of four.
Fun fact: The British imperial gallon is slightly bigger—about 1.2 U.S. gallons. So if you’re visiting London, don’t order a gallon of ale thinking it’s the same. You’ve been warned.
How to remember forever
Use a mnemonic: “Great Questions” = “Gallon is Quartered four times.” Or just think: “A gallon is a quart’s boss.” Bossy but fair.
How Many Gallons Are In 28 Quarts
Or visualize a staircase. Top step: gallon. Next step down: two half-gallons. Below that: four quarts. See? Stairs don’t lie.
My favorite trick? Sing it to the tune of “We Will Rock You”: “One gal-lon, four quarts, stomp-stomp-clap!” Try it. Your cat will judge you, but it works.