Quart (US) to Gallon (US)Converter
Instantly convert Quart (US) (qt) to Gallon (US) (gal). Free, accurate, and easy to use.
How to Convert Quart (US) to Gallon (US)
To convert Quart (US) (qt) to Gallon (US) (gal), multiply your value by 0.25000013.
Example: 5 qt × 0.25000013 = 1.25000066 gal
What is a Quart (US)?
The US liquid quart equals 32 fluid ounces, 2 pints, or approximately 946.353 milliliters. It is used for motor oil, large recipe volumes, and bottled beverages in the United States. The UK quart equals 2 imperial pints, approximately 1.137 liters. Four US quarts make one US gallon.
What is a Gallon (US)?
The US liquid gallon equals 128 fluid ounces, 8 pints, or approximately 3.785 liters. It is the standard unit for fuel, water, and large liquid volumes in the United States. The UK imperial gallon is larger at approximately 4.546 liters — about 20% more. The gallon difference is a common source of confusion for international recipes and fuel economy figures.
Quart (US) to Gallon (US) Conversion Table
| Quart (US) (qt) | Gallon (US) (gal) |
|---|---|
| 0.001 qt | 0.00025 gal |
| 0.01 qt | 0.0025 gal |
| 0.1 qt | 0.02500001 gal |
| 0.5 qt | 0.12500007 gal |
| 1 qt | 0.25000013 gal |
| 2 qt | 0.50000026 gal |
| 5 qt | 1.25000066 gal |
| 10 qt | 2.50000132 gal |
| 20 qt | 5.00000264 gal |
| 50 qt | 12.5000066 gal |
| 100 qt | 25.00001321 gal |
| 200 qt | 50.00002642 gal |
| 500 qt | 125.00006604 gal |
| 1000 qt | 250.00013209 gal |
| 5000 qt | 1250.00066043 gal |
| 10000 qt | 2500.00132086 gal |
| 50000 qt | 12500.0066043 gal |
| 100000 qt | 25000.01320861 gal |
| 1000000 qt | 250000.13208609 gal |
| 1000000000 qt | 250000132.08608842 gal |
Frequently Asked Questions
How do I convert Quart (US) to Gallon (US)?
Multiply the Quart (US) value by 0.25000013. Formula: gal = qt × 0.25000013. Example: 10 qt = 2.50000132 gal.
How many Gallon (US) are in one Quart (US)?
One Quart (US) (qt) equals 0.25000013 Gallon (US) (gal).
How many Quart (US) are in one Gallon (US)?
One Gallon (US) (gal) equals 3.99999789 Quart (US) (qt).
What is the exact conversion factor from Quart (US) to Gallon (US)?
The conversion factor is 0.25000013. Multiply any qt value by this number to get gal. For the reverse, multiply by 3.99999789.
How do I convert Gallon (US) back to Quart (US)?
Divide by 0.25000013, or equivalently multiply by 3.99999789. Formula: qt = gal ÷ 0.25000013.
Is the Quart (US)-to-Gallon (US) conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 0.25000013 is exact and universally agreed upon.