Convert between gallons (gal) and quarts (qt) for liquid/dry volume measurements. Supports US liquid (cooking), US dry (grains), and Imperial (UK) systems.
Measurement system (1 gal = 4 qt in all systems):
US Liquid: Drinks, cooking | US Dry: Grains, produce | Imperial: UK/Canada
US Liquid Conversion:
1 US Gallon (gal) = 4 US Liquid Quarts (qt) | 1 US Liquid Quart = 0.25 US Gallons
qt = gal × 4 | gal = qt × 0.25 (1 US gal ≈ 3.785 L; 1 US liquid qt ≈ 0.946 L)
Accepts decimals (e.g., 2 gal = 8 qt in US liquid system)
Display format:
Quick conversions (US Liquid) - click to auto-fill:
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Three common measurement systems for gallons and quarts—key differences and use cases
| System | 1 Quart (qt) ≈ | 1 Gallon (gal) ≈ | Common Uses |
|---|---|---|---|
| US Liquid | 0.946 liters (L) 32 fluid ounces (fl oz) |
3.785 L 128 fl oz 4 US liquid qt |
Water, milk, soda, cooking oils, beer |
| US Dry | 1.101 L 37.24 fl oz |
4.405 L 148.94 fl oz 4 US dry qt |
Wheat, corn, berries, dry beans, produce |
| Imperial (UK) | 1.136 L 40 Imperial fl oz |
4.546 L 160 Imperial fl oz 4 Imperial qt |
UK, Canada, Australia—beverages, cooking |
| Item | Gallons (gal) | Quarts (qt) | Liters (L) |
|---|---|---|---|
| 1 small milk carton | 0.25 gal | 1 qt | 0.946 L |
| 1 standard milk jug | 1 gal | 4 qt | 3.785 L |
| 1 large water bottle (1.5 L) | 0.396 gal | 1.585 qt | 1.5 L |
| 1 average cooking pot | 2 gal | 8 qt | 7.57 L |
| 1 car fuel tank (15 gal) | 15 gal | 60 qt | 56.78 L |
Common conversions for US Liquid, US Dry, and Imperial systems
| Gallons (gal) | = | US Liquid Qt | US Dry Qt | Imperial Qt | Use Case |
|---|---|---|---|---|---|
| 0.25 gal | = | 1 qt | 1 qt | 1 qt | Small milk carton (US) |
| 0.5 gal | = | 2 qt | 2 qt | 2 qt | Medium cooking pot |
| 1 gal | = | 4 qt | 4 qt | 4 qt | Standard milk jug (US) |
| 2 gal | = | 8 qt | 8 qt | 8 qt | Large water container |
| 10 gal | = | 40 qt | 40 qt | 40 qt | Home brewing batch |
All systems: 1 gal = 4 qt. Actual volume (L) differs by system—see "About Units" for details.
Common questions about gallon-to-quart conversions
In all measurement systems, 1 gallon = 4 quarts. This ratio is consistent across:
The only difference is the actual volume of 1 gallon/quart (e.g., 1 US liquid gallon ≈ 3.785 L, while 1 Imperial gallon ≈ 4.546 L).
Use the fixed 4:1 ratio for all systems:
quarts = gallons × 4
gallons = quarts × 0.25 (or ÷ 4)
Example 1: Convert 3 US liquid gallons to quarts
3 gal × 4 = 12 qt (US liquid)
Example 2: Convert 16 Imperial quarts to gallons
16 qt ÷ 4 = 4 gal (Imperial)
The key difference is their actual volume:
This means an Imperial quart is about 20% larger than a US liquid quart. However, both are 1/4 of their respective gallons.
Common scenarios include:
The US retains customary units (gallons, quarts) due to:
That said, many products show both customary and metric units (e.g., "1 quart (0.946 L)").
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