Gallons to Quarts Converter
Unit ConversionConvert gallons to quarts: 1 gallon equals exactly 4 quarts. With a conversion table, the formula and every related volume converter.
Quarts
Equivalent volume in quarts
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Odeh Ahwal0people find this calculator helpful
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SponsoredThis calculator converts a volume in US gallons to quarts using the exact ratio: multiply the gallon value by 4. One US gallon is defined as exactly 3,785.411784 mL, and one quart as exactly one quarter of a gallon, so this conversion carries no rounding at all.
Gallons to quarts is a common conversion for large batches of liquid, from bulk cooking and canning to paint, motor oil, and other household or automotive fluids sold by the gallon but measured out in smaller quart containers. Knowing the exact 4 quarts per gallon ratio makes it easy to divide a gallon container into smaller portions.
For the reverse direction, converting quarts back into gallons, or converting a gallon value into pints or cups instead, see the related converters below.
Gallons to Quarts Conversion Table
This table covers common bulk-liquid measurements.
| Gallons | Quarts |
|---|---|
| 0.25 gal | 1 qt |
| 0.5 gal | 2 qt |
| 1 gal | 4 qt |
| 2 gal | 8 qt |
| 3 gal | 12 qt |
| 5 gal | 20 qt |
| 10 gal | 40 qt |
| 25 gal | 100 qt |
| 55 gal | 220 qt |
The Gallons to Quarts Formula
To convert gallons to quarts, multiply the gallon value by 4. For example, 2.5 gallons times 4 equals 10 quarts.
To go the other way, use the Quarts to Gallons converter instead, which divides by 4 for you. For the smaller pint scale instead, see the Gallons to Pints converter below.
Why a Gallon Equals Exactly 4 Quarts
A US quart is defined as exactly 1/4 of a gallon, so the 4:1 ratio is a fixed definitional fact, not a rounded approximation. This holds for any liquid, since both units describe the same kind of quantity, volume, unlike a gallons-to-weight conversion, which would depend on the liquid's density.
The Full US Customary Volume Ladder
A gallon is also exactly 8 pints, 16 cups, and 128 fluid ounces, all derived from the same underlying definition. Quarts sit in the middle of this ladder, making them a practical mid-size unit for anything too large for a cup but too small to measure out a full gallon at once.
To find what a volume weighs, the Gallons to Pounds Converter converts gallons to pounds for water, milk, flour, sugar, honey, or butter. The Quarts to Pounds Converter does the same starting from quarts. Paint is sold by the gallon, and the Paint Coverage Calculator works out how many gallons a wall area needs for a given number of coats.
Frequently Asked Questions
How many quarts is 7 gallons?
28 quarts.
How many quarts is 15 gallons?
60 quarts.
How many quarts is 30 gallons?
120 quarts.
How many quarts is 35 gallons?
140 quarts.
Why is a quart called a "quart"?
The name comes from "quarter," since a quart is exactly one quarter of a gallon.
Can a gallons-to-quarts result be negative?
No. A volume can't be below zero, so a negative entry shows a dash instead of a result. A minus sign in front of a value is usually a typing slip.
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