Conversion formula

The conversion factor from pints to gallons is 0.125, which means that 1 pint is equal to 0.125 gallons:

1 pt = 0.125 gal

To convert 640 pints into gallons we have to multiply 640 by the conversion factor in order to get the volume amount from pints to gallons. We can also form a simple proportion to calculate the result:

1 pt → 0.125 gal

640 pt → V_(gal)

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

V_(gal) = 640 pt × 0.125 gal

V_(gal) = 80 gal

The final result is:

640 pt → 80 gal

We conclude that 640 pints is equivalent to 80 gallons:

640 pints = 80 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.0125 × 640 pints.

Another way is saying that 640 pints is equal to 1 ÷ 0.0125 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred forty pints is approximately eighty gallons:

640 pt ≅ 80 gal

An alternative is also that one gallon is approximately zero point zero one three times six hundred forty pints.

Conversion table

pints to gallons chart

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