Formula
Convert quarts to US gallons with:
gal = qt / 4
Example
4 qt = 1 gal
quarts to US gallons table
Questions
How many US gallons are in a quart?
One quart is 0.25 US gallons. Enter any value above to convert instantly.
What is the formula to convert quarts to US gallons?
Use gal = qt / 4. The calculator applies this for every value you type.
Is this conversion exact?
Yes — it uses the standard conversion factor (gal = qt / 4), rounded to 6 significant digits for display.