## Conversion formula

The conversion factor from cups to gallons is 0.0625, which means that 1 cup is equal to 0.0625 gallons:

1 cup = 0.0625 gal

To convert 15.8 cups into gallons we have to multiply 15.8 by the conversion factor in order to get the volume amount from cups to gallons. We can also form a simple proportion to calculate the result:

1 cup → 0.0625 gal

15.8 cup → V(gal)

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

V(gal) = 15.8 cup × 0.0625 gal

V(gal) = 0.9875 gal

The final result is:

15.8 cup → 0.9875 gal

We conclude that 15.8 cups is equivalent to 0.9875 gallons:

15.8 cups = 0.9875 gallons

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 1.0126582278481 × 15.8 cups.

Another way is saying that 15.8 cups is equal to 1 ÷ 1.0126582278481 gallons.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that fifteen point eight cups is approximately zero point nine eight eight gallons:

15.8 cup ≅ 0.988 gal

An alternative is also that one gallon is approximately one point zero one three times fifteen point eight cups.

## Conversion table

### cups to gallons chart

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

cups (cup) gallons (gal)
16.8 cups 1.05 gallons
17.8 cups 1.113 gallons
18.8 cups 1.175 gallons
19.8 cups 1.238 gallons
20.8 cups 1.3 gallons
21.8 cups 1.363 gallons
22.8 cups 1.425 gallons
23.8 cups 1.488 gallons
24.8 cups 1.55 gallons
25.8 cups 1.613 gallons