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 489.9 teaspoons into gallons we have to multiply 489.9 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

489.9 tsp → V_(gal)

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

V_(gal) = 489.9 tsp × 0.0013020833333325 gal

V_(gal) = 0.63789062499957 gal

The final result is:

489.9 tsp → 0.63789062499957 gal

We conclude that 489.9 teaspoons is equivalent to 0.63789062499957 gallons:

489.9 teaspoons = 0.63789062499957 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 1.567666870791 × 489.9 teaspoons.

Another way is saying that 489.9 teaspoons is equal to 1 ÷ 1.567666870791 gallons.

Approximate result

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

489.9 tsp ≅ 0.638 gal

An alternative is also that one gallon is approximately one point five six eight times four hundred eighty-nine 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