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 4.5 quarts into gallons we have to multiply 4.5 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

4.5 qt → V_(gal)

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

V_(gal) = 4.5 qt × 0.25 gal

V_(gal) = 1.125 gal

The final result is:

4.5 qt → 1.125 gal

We conclude that 4.5 quarts is equivalent to 1.125 gallons:

4.5 quarts = 1.125 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.88888888888889 × 4.5 quarts.

Another way is saying that 4.5 quarts is equal to 1 ÷ 0.88888888888889 gallons.

Approximate result

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

4.5 qt ≅ 1.125 gal

An alternative is also that one gallon is approximately zero point eight eight nine times four point five 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