How Many Cups in One Gallon? Complete Measurement Conversion Guide

What Is the Difference Between the Metric System and Imperial System?

Before Great Britain officially switched to the metric system in 1965, they had what was called the British Imperial System. The US system of weights and measures is based upon it. The conversions between the two are notoriously difficult, mostly because fluid ounces are a measure of volume, not weight.

Depending on where you are, either 20 or 16 fluid ounces equals one pint. Milk, for example, is about 2-3% more dense than water, which weighs about 1 pound per 16 fl. oz., so a little bit over a pound. Even the Canadians got wise: The U.S., along with Liberia and Myanmar, are the only ones left clinging to things like imperial cups—which are just shy of a full metric cup.

When it comes to cooking, converting from pints can be tricky because stores commonly sell fresh produce by weight, not volume.

Volume Conversion for Ounces to Cups

8 fluid ounces = 1 cup

Volume Conversions for Cups to Pints

2 cups = 1 pint

How Many Cups in a Gallon?

1 US fluid gallon = 16 US cups
1 US dry gallon = 18.6 US cups
1 Imperial gallon = 18.18 metric cups

1 Gallon of water = 16 cups
1 Gallon of milk = 16 cups
1 Gallon of coffee = 20 cups of coffee beans

How Many Cups in a Half Gallon?

½ Gallon of water = 8 cups
½ Gallon of milk = 8 cups
½ Gallon of coffee = 8 cups

How Many Cups in a Quart?

1 Quart = 4 cups

How Many Cups in a Pint?

If we remember, 8 ounces = 1 cup, 2 cups = 1 pint (or 16 ounces = 1 pint).

There are generally 2 cups in 1 pint, however depending on the ingredient, this may change. For example, 1 pint of Blueberries = 2 cups = 12 ounces (dry), whereas 1 pint of sour cream or 1 pint of ice cream = 2 cups.

Say a recipe calls for cups of sliced strawberries, but the grocery store sells whole strawberries in plastic clamshells measured by weight. Here’s what to remember:

1 Pint = ¾ pound (12 oz.) = 12 large, 24 medium, or 36 small strawberries = 1 ½ to 2 cups sliced strawberries

1 lb whole strawberries = 2 ¾ cups sliced strawberries

How Many Cups in a Half Pint?

½ Pint = 1 cup

Measurement Conversion Table:

1 US Gallon = 4 Quarts = 8 Pints = 128 ounces = 16 US cups
1 Quart = 2 Pints = 32 ounces = 4 US cups
1 Pint = 16 ounces = 2 US cups
Three-fourths of a cup = 12 tablespoons
Half of a cup = 8 tablespoons 4 ounces
Third of a cup = 5 tablespoons and 1 teaspoon
Fourth of a cup = 4 tablespoons 2 ounces
Eighth of a cup = 2 tablespoons
1 tablespoon = .90 cubic inches

1 Quart = 2 Pints
1 Pint = 2 cups, 32 Ounces
1 ounce = 2 tablespoons
1 tablespoon = 3 teaspoons