Converters
12
US gallons to US quarts Converter
Convert us gallons to us quarts instantly with the formula, worked examples, rounding guidance, and related volume conversions.
Units
85
Mode
Live
Pair-specific conversion guide
US gallon to US quart formula
The US gallon and US quart are both units of volume in the US customary system. Converting gallons to quarts is straightforward: one US gallon equals exactly four US quarts. This simple relationship makes it easy to scale measurements for cooking, automotive fluids, or other liquid volumes where larger quantities are expressed in gallons and smaller ones in quarts.
Formula model
1 gal = 4 qt
1 US gallon equals
Quick factor: 1 gal = 4 qt.
To convert gallons to quarts, multiply the number of gallons by 4.
Remember that 1 gallon equals 4 quarts, so 5 gallons is 20 quarts and 10 gallons is 40 quarts.
Check the measurement system for cooking units: US customary and imperial volumes are not always the same.
Precision and rounding
The calculation uses the catalog's fixed conversion factors between gal and qt. Full decimal precision is kept for the calculation; only the displayed value is rounded for readability.
Reference: NIST conversion factorsVolume
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Conversion table
1 US gallon equals
| Unit | Value |
|---|---|
| Liter L | 3.785411784 |
| Milliliter mL | 3785.411784 |
| Cubic meter m3 | 0.003785411784 |
| US teaspoon tsp | 768 |
| US tablespoon tbsp | 256 |
| US fluid ounce fl oz | 128 |
| US cup cup | 16 |
| US pint pt | 8 |
| US quart qt | 4 |
FAQ
US gallon to US quart questions
How many quarts are in 3 US gallons?
There are 12 quarts in 3 US gallons, since 3 multiplied by 4 equals 12.
Is the conversion factor the same for UK gallons?
No, the conversion factor of 1 gallon = 4 quarts applies only to US customary units. UK gallons and quarts have different sizes.