Conversion formula

The conversion factor from quarts to gallons is 0.25, which means that 1 quart is equal to 0.25 gallons:

1 qt = 0.25 gal

To convert 509 quarts into gallons we have to multiply 509 by the conversion factor in order to get the volume amount from quarts to gallons. We can also form a simple proportion to calculate the result:

1 qt → 0.25 gal

509 qt → V_(gal)

Solve the above proportion to obtain the volume V in gallons:

V_(gal) = 509 qt × 0.25 gal

V_(gal) = 127.25 gal

The final result is:

509 qt → 127.25 gal

We conclude that 509 quarts is equivalent to 127.25 gallons:

509 quarts = 127.25 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.0078585461689587 × 509 quarts.

Another way is saying that 509 quarts is equal to 1 ÷ 0.0078585461689587 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that five hundred nine quarts is approximately one hundred twenty-seven point two five gallons:

509 qt ≅ 127.25 gal

An alternative is also that one gallon is approximately zero point zero zero eight times five hundred nine quarts.

Conversion table

quarts to gallons chart

For quick reference purposes, below is the conversion table you can use to convert from quarts to gallons