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 400 quarts into gallons we have to multiply 400 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

400 qt → V_(gal)

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

V_(gal) = 400 qt × 0.25 gal

V_(gal) = 100 gal

The final result is:

400 qt → 100 gal

We conclude that 400 quarts is equivalent to 100 gallons:

400 quarts = 100 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.01 × 400 quarts.

Another way is saying that 400 quarts is equal to 1 ÷ 0.01 gallons.

Approximate result

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

400 qt ≅ 100 gal

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