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 138 teaspoons into gallons we have to multiply 138 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

138 tsp → V_(gal)

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

V_(gal) = 138 tsp × 0.0013020833333325 gal

V_(gal) = 0.17968749999988 gal

The final result is:

138 tsp → 0.17968749999988 gal

We conclude that 138 teaspoons is equivalent to 0.17968749999988 gallons:

138 teaspoons = 0.17968749999988 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 5.5652173913081 × 138 teaspoons.

Another way is saying that 138 teaspoons is equal to 1 ÷ 5.5652173913081 gallons.

Approximate result

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

138 tsp ≅ 0.18 gal

An alternative is also that one gallon is approximately five point five six five times one hundred thirty-eight 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