Quarts to gallons conversion factor is 1/4. To find out how many gallons in quarts, divide the quart value by 4 (or multiply by 0.25).
1 Quart = 0.25 (1/4) Gallon [US, UK, Fluid or Dry]
Quart and gallon are imperial and US Customary volume measurement units and 1 quart equals to 1/4 of a gallon for both liquid and dry measurement. The abbreviation for gallon is "gal" and for quart "qt".