Quarts to Gallons Converter
About Quarts and Gallons
Quarts (qt) and gallons (gal) are traditional volume units used primarily in the United States and the United Kingdom. There are three main types:
- US liquid quart/gallon
- US dry quart/gallon
- UK (imperial) quart/gallon
Conversion formula: 1 gallon = 4 quarts (for all types)
This means that to convert quarts to gallons, you divide by 4. To convert gallons to quarts, you multiply by 4.
Quarts to Gallons Conversion Table
| Quarts (qt) | Gallons (gal) | Notes |
|---|---|---|
| 1 qt | 0.25 gal | Quarter of a gallon |
| 2 qt | 0.5 gal | Half gallon |
| 3 qt | 0.75 gal | Three-quarters of a gallon |
| 4 qt | 1 gal | Exactly one gallon |
| 5 qt | 1.25 gal | One and a quarter gallons |
| 8 qt | 2 gal | Exactly two gallons |
| 10 qt | 2.5 gal | Two and a half gallons |
| 12 qt | 3 gal | Exactly three gallons |
| 16 qt | 4 gal | Exactly four gallons |
| 20 qt | 5 gal | Common container size |
Understanding Quarts and Gallons
Definitions
Quart (qt): A unit of volume in the US customary and imperial systems of measurement. The word “quart” comes from “quarter” because it represents one-fourth of a gallon.
Gallon (gal): A unit of volume for liquid capacity in both the US customary and imperial systems of measurement.
Different Types of Quarts and Gallons
There are three main types of quarts and gallons in use:
- US Liquid Measures: 1 US liquid gallon = 3.785 liters = 4 US liquid quarts
- US Dry Measures: 1 US dry gallon = 4.405 liters = 4 US dry quarts
- UK Imperial Measures: 1 Imperial gallon = 4.546 liters = 4 Imperial quarts
Conversion Formulas
The relationship between quarts and gallons is consistent across all systems:
- 1 gallon = 4 quarts
- 1 quart = 0.25 gallons
To convert quarts to gallons: Divide the number of quarts by 4
Formula: gallons = quarts ÷ 4
To convert gallons to quarts: Multiply the number of gallons by 4
Formula: quarts = gallons × 4
Practical Examples
Example 1: Convert 6 quarts to gallons
gallons = 6 quarts ÷ 4 = 1.5 gallons
Example 2: Convert 2.75 gallons to quarts
quarts = 2.75 gallons × 4 = 11 quarts
Common Uses
In the United States, gallons and quarts are commonly used for:
- Milk containers (gallon, half-gallon, quart)
- Fuel (gasoline sold by the gallon)
- Ice cream (quart and half-gallon containers)
- Cooking and recipes (measuring liquids)
- Paint and other household liquids
Relationship to Other Units
In the US customary system, volume units are related as follows:
- 1 gallon = 4 quarts
- 1 quart = 2 pints
- 1 pint = 2 cups
- 1 cup = 8 fluid ounces
This means that 1 gallon = 4 quarts = 8 pints = 16 cups = 128 fluid ounces.