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 0.4 quarts into gallons we have to multiply 0.4 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

0.4 qt → V_(gal)

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

V_(gal) = 0.4 qt × 0.25 gal

V_(gal) = 0.1 gal

The final result is:

0.4 qt → 0.1 gal

We conclude that 0.4 quarts is equivalent to 0.1 gallons:

0.4 quarts = 0.1 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 10 × 0.4 quarts.

Another way is saying that 0.4 quarts is equal to 1 ÷ 10 gallons.

Approximate result

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

0.4 qt ≅ 0.1 gal

An alternative is also that one gallon is approximately ten times zero point four 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