Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 gal | 0.004 qt | |
| 0.01 gal | 0.04 qt | |
| 0.1 gal | 0.4 qt | |
| 1 gal | 4 qt | |
| 5 gal | 20 qt | |
| 10 gal | 40 qt | |
| 50 gal | 200 qt | |
| 100 gal | 400 qt | |
| 1000 gal | 4000 qt |
Common us gallon values converted to us quart — factor: 1 gal = 4 qt
| US Gallon (gal) | US Quart (qt) | Context |
|---|---|---|
| 0.0078 gal | 0.0312 qt | Tablespoon |
| 0.031 gal | 0.124 qt | Quarter cup |
| 0.0625 gal | 0.25 qt | Cup |
| 0.125 gal | 0.5 qt | Pint |
| 0.25 gal | 1 qt | Quart |
| 0.5 gal | 2 qt | Half gallon |
| 1 gal | 4 qt | Gallon jug |
| 2 gal | 8 qt | Two gallons |
| 5 gal | 20 qt | Jerrycan |
| 10 gal | 40 qt | 10-gallon drum |
| 20 gal | 80 qt | 20-gallon tank |
| 42 gal | 168 qt | Oil barrel |
| 55 gal | 220 qt | Drum barrel |
| 100 gal | 400 qt | Large drum |
| 1,000 gal | 4,000 qt | Tank |
Converting us gallon to us quart comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using us quart, or a laboratory protocol may specify volumes in us gallon that need to be measured with equipment calibrated in us quart.
In everyday use, knowing that 5 gal = 20 qt and 10 gal = 40 qt covers most common situations. For bulk calculations, 100 gal = 400 qt is a useful anchor. The reverse conversion — us quart back to us gallon — uses the factor 0.25, so 1 qt = 0.25 gal.
All conversions use the internationally recognized factor of exactly 1 gal = 4 qt. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: US Quart = US Gallon × 3.9999979
Multiply any us gallon value by 3.9999979 to get us quart. One us gallon equals 3.9999979 qt.
Reverse: US Gallon = US Quart × 0.25000013
US gallons × 4 = quarts. One gallon = exactly four quarts.
0.5 gal = 2 qt, 5 gal = 20 qt.
Quarts ÷ 4 = gallons.
Prices fuel in USD per gallon and tracks daily sales volume in thousands of gallons.
Calculates pesticide and fertilizer application rates in gallons per acre.
Measures pool volume in gallons to calculate chlorine and pH chemical dosages.
Purchases engine oil, transmission fluid, and coolant in quart and gallon containers.
Estimates coverage (one US gallon covers about 350 sq ft) and quotes by the gallon.
Specifies water heater tank capacity (40, 50, 80 gallons) for residential systems.
The US liquid gallon is defined as exactly 231 cubic inches, or 3.785411784 liters. It traces its origins to the Queen Anne wine gallon of 1707, which American colonies adopted.
The US gallon differs from the UK Imperial gallon by about 16.5%. This matters for fuel economy: a US MPG figure is lower than the equivalent UK MPG for the same car.
Interesting fact: The United States, Liberia, and Myanmar are the only countries using the US gallon as a primary everyday volume unit.
The US liquid quart is one-quarter of a US gallon, equal to 946.353 mL. The word 'quart' comes from Old French quarte (fourth part), dating to medieval England.
Quarts are standard in American cooking and food packaging: motor oil, paint, cream, and ice cream are commonly sold in quart containers.
Interesting fact: The US quart and the Imperial quart differ significantly — the Imperial quart is 1.136 liters versus 0.946 liters for the US quart.