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 120.9 teaspoons into gallons we have to multiply 120.9 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

120.9 tsp → V_(gal)

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

V_(gal) = 120.9 tsp × 0.0013020833333325 gal

V_(gal) = 0.15742187499989 gal

The final result is:

120.9 tsp → 0.15742187499989 gal

We conclude that 120.9 teaspoons is equivalent to 0.15742187499989 gallons:

120.9 teaspoons = 0.15742187499989 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 6.3523573201036 × 120.9 teaspoons.

Another way is saying that 120.9 teaspoons is equal to 1 ÷ 6.3523573201036 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one hundred twenty point nine teaspoons is approximately zero point one five seven gallons:

120.9 tsp ≅ 0.157 gal

An alternative is also that one gallon is approximately six point three five two times one hundred twenty 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