Conversion formula

The conversion factor from teaspoons to gallons is 0.0013020833333325, which means that 1 teaspoon is equal to 0.0013020833333325 gallons:

1 tsp = 0.0013020833333325 gal

To convert 490.9 teaspoons into gallons we have to multiply 490.9 by the conversion factor in order to get the volume amount from teaspoons to gallons. We can also form a simple proportion to calculate the result:

1 tsp → 0.0013020833333325 gal

490.9 tsp → V_(gal)

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

V_(gal) = 490.9 tsp × 0.0013020833333325 gal

V_(gal) = 0.6391927083329 gal

The final result is:

490.9 tsp → 0.6391927083329 gal

We conclude that 490.9 teaspoons is equivalent to 0.6391927083329 gallons:

490.9 teaspoons = 0.6391927083329 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 1.5644734161754 × 490.9 teaspoons.

Another way is saying that 490.9 teaspoons is equal to 1 ÷ 1.5644734161754 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred ninety point nine teaspoons is approximately zero point six three nine gallons:

490.9 tsp ≅ 0.639 gal

An alternative is also that one gallon is approximately one point five six four times four hundred ninety point nine teaspoons.

Conversion table

teaspoons to gallons chart

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