How many quarts are in a gallon?

There are exactly 4 quarts in one gallon. The word 'quart' derives from the Latin 'quartus' meaning fourth or quarter, since a quart is one-quarter of a gallon.

How many cups are in a gallon?

There are 16 cups in one gallon. Since 1 gallon = 4 quarts and 1 quart = 4 cups, you get 4 × 4 = 16 cups.

How many liters is a gallon?

One US gallon equals approximately 3.785 liters. One Imperial gallon equals approximately 4.546 liters.

How Many Quarts in a Gallon? (4 Quarts)

The Quick Answer

There are exactly 4 quarts in one gallon. The name "quart" literally means "quarter" of a gallon.

Complete Volume Breakdown

1 Gallon Equals	Amount
Quarts	4
Pints	8
Cups	16
Fluid ounces	128
Tablespoons	256
Teaspoons	768
Liters	3.785
Milliliters	3,785

Examples

Motor Oil

Car oil changes typically require 4-6 quarts (1-1.5 gallons). Oil is sold in quart bottles, so a 5-quart oil change uses 1.25 gallons.

Cooking

A large stock pot might hold 2 gallons (8 quarts) of soup or broth.

Paint

Paint is sold in quarts and gallons. One gallon of paint covers roughly 350-400 square feet, and you can buy individual quarts for smaller jobs.

Memory Aid

The US liquid volume system doubles at each step up: 2 cups = 1 pint, 2 pints = 1 quart, 4 quarts = 1 gallon. Use our volume converter for any volume conversion.