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 138 quarts into gallons we have to multiply 138 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

138 qt → V_(gal)

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

V_(gal) = 138 qt × 0.25 gal

V_(gal) = 34.5 gal

The final result is:

138 qt → 34.5 gal

We conclude that 138 quarts is equivalent to 34.5 gallons:

138 quarts = 34.5 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.028985507246377 × 138 quarts.

Another way is saying that 138 quarts is equal to 1 ÷ 0.028985507246377 gallons.

Approximate result

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

138 qt ≅ 34.5 gal

An alternative is also that one gallon is approximately zero point zero two nine times one hundred thirty-eight 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