The US quart
The US liquid quart equals exactly 946.352946 mL, defined as 1/4 of a US gallon (2 US pints). It is a common US packaging size for milk, oil, and cooking stock.
US quarts to US gallons Converter
1 qt = 0.25 gal (US quart → US gallon)
1 qt = 0.25 gal
1 US quart equals 0.25 US gallons. To convert US quarts to US gallons, multiply the US quart value by 0.25. For quick reference: 1 qt = 0.25 gal, 5 qt = 1.25 gal, 10 qt = 2.5 gal, 100 qt = 25 gal.
Formula
US gallons = US quarts × 0.25Quick
How to convert US quarts to US gallons
Take your value
Start with your value in US quarts.
Multiply by 0.25
Multiply the US quart value by 0.25. This is the exact conversion factor from US quarts to US gallons.
Read the result
The product is your value in US gallons. For example, 5 qt × 0.25 = 1.25 gal.
Conversion formula
The exact factor from US quarts to US gallons is 0.25.
US gallons = US quarts × 0.25
US quarts to US gallons conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| US quarts (qt) | US gallons (gal) |
|---|---|
| 0.1 qt | 0.025 gal |
| 0.25 qt | 0.0625 gal |
| 0.5 qt | 0.125 gal |
| 1 qt | 0.25 gal |
| 1.5 qt | 0.375 gal |
| 2 qt | 0.5 gal |
| 2.5 qt | 0.625 gal |
| 3 qt | 0.75 gal |
| 4 qt | 1 gal |
| 5 qt | 1.25 gal |
| 6 qt | 1.5 gal |
| 7 qt | 1.75 gal |
| 8 qt | 2 gal |
| 9 qt | 2.25 gal |
| 10 qt | 2.5 gal |
| 12 qt | 3 gal |
| 15 qt | 3.75 gal |
| 20 qt | 5 gal |
| 25 qt | 6.25 gal |
| 30 qt | 7.5 gal |
| 40 qt | 10 gal |
| 50 qt | 12.5 gal |
| 60 qt | 15 gal |
| 75 qt | 18.75 gal |
| 100 qt | 25 gal |
| 125 qt | 31.25 gal |
| 150 qt | 37.5 gal |
| 200 qt | 50 gal |
| 250 qt | 62.5 gal |
| 300 qt | 75 gal |
| 400 qt | 100 gal |
| 500 qt | 125 gal |
| 600 qt | 150 gal |
| 750 qt | 187.5 gal |
| 1000 qt | 250 gal |
| 1500 qt | 375 gal |
| 2000 qt | 500 gal |
| 2500 qt | 625 gal |
| 3000 qt | 750 gal |
| 4000 qt | 1000 gal |
| 5000 qt | 1250 gal |
| 7500 qt | 1875 gal |
| 10000 qt | 2500 gal |
| 15000 qt | 3750 gal |
| 20000 qt | 5000 gal |
| 25000 qt | 6250 gal |
| 30000 qt | 7500 gal |
| 40000 qt | 10000 gal |
| 50000 qt | 12500 gal |
| 100000 qt | 25000 gal |
Real-world reference
Motor oil is commonly sold in 1-quart bottles. A quart of milk is a standard US grocery size. In US gallons, that gives you: 1 qt = 0.25 gal, 10 qt = 2.5 gal, 100 qt = 25 gal.
Frequently asked questions
- How many US gallons are in 1 US quart?
- 1 US quart equals 0.25 US gallons.
- How do I convert US quarts to US gallons?
- Multiply the US quart value by 0.25. So x qt × 0.25 = the equivalent in gal.
- What is 5 US quarts in US gallons?
- 5 US quarts equals 1.25 US gallons.
- What is 10 US quarts in US gallons?
- 10 US quarts equals 2.5 US gallons.
- What is 100 US quarts in US gallons?
- 100 US quarts equals 25 US gallons.
- How do I convert back from US gallons to US quarts?
- Multiply the US gallon value by 4. For example, 1 gal = 4 qt.
- Is the US quart bigger than the US gallon?
- No. 1 US quart is smaller than 1 US gallon. It takes 4 US quarts to equal 1 US gallon.
- Are these conversion factors exact?
- The factor is derived directly from the SI definitions of US quart and US gallon; the displayed value is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.
About the US quart and the US gallon
The US gallon
The US liquid gallon equals exactly 3.785411784 liters, defined as 231 cubic inches. It is the standard fuel and milk unit in the United States. The US gallon is about 16.7% smaller than the UK (imperial) gallon (4.54609 L), so quoting fuel economy as 'mpg' without specifying the gallon can mislead by a wide margin.