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Gallons to Quarts Converter

Convert gallons to quarts using the formula gal × 4 = qt. The calculator below shows higher precision results. The reference table is rounded for readability.

This converter uses US customary gallons and quarts. UK (imperial) gallons and quarts are a different size.

gal
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4 qt
gal × 4 = qt
gal to qt formula and worked examples
Try: 1 gal 5 gal 10 gal 50 gal 100 gal

Formula and Step-by-Step

gal × 4 = qt

Step-by-step: 1 gal to qt

  1. Start with 1 gal
  2. Multiply by 4: 1 × 4 = 4
  3. Result: 1 gal = 4 qt

Conversion Table

Common gallons to quarts values. The table and calculator both use the same conversion formula shown above.

Gallons (gal) Quarts (qt)
1 gal 4 qt
2 gal 8 qt
5 gal 20 qt
10 gal 40 qt
25 gal 100 qt
50 gal 200 qt
100 gal 400 qt
250 gal 1,000 qt
500 gal 2,000 qt
1,000 gal 4,000 qt

What Are Gallons and Quarts?

What is a Gallon?

A US gallon is a unit of volume equal to approximately 3.785 liters. Note: a UK (imperial) gallon is larger at 4.546 liters. This converter uses US gallons.

What is a Quart?

A US quart is a unit of volume equal to approximately 946.4 milliliters or 2 US pints. A UK (imperial) quart is larger at 1,136.5 milliliters. This converter uses US quarts.

Why convert gallons to quarts?

People convert gallons to quarts when working across different measurement systems.

Frequently Asked Questions

1 US gallon equals 4 quarts.
The formula is: gal × 4 = qt. See the gal to qt formula page for step-by-step worked examples.
Use the quarts to gallons converter. 1 qt = 0.25 gal.
Yes. The conversion uses the formula gal × 4 = qt, which is the exact internationally defined standard. Table values are rounded for quick reference.
Apply the formula gal × 4 = qt. For quick estimates, round the factor to a simpler number.
person Written by Sean Day verified Reviewed by UnitCompare update Last updated Mar 28, 2026