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 685 teaspoons into gallons we have to multiply 685 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

685 tsp → V_(gal)

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

V_(gal) = 685 tsp × 0.0013020833333325 gal

V_(gal) = 0.89192708333273 gal

The final result is:

685 tsp → 0.89192708333273 gal

We conclude that 685 teaspoons is equivalent to 0.89192708333273 gallons:

685 teaspoons = 0.89192708333273 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 1.1211678832124 × 685 teaspoons.

Another way is saying that 685 teaspoons is equal to 1 ÷ 1.1211678832124 gallons.

Approximate result

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

685 tsp ≅ 0.892 gal

An alternative is also that one gallon is approximately one point one two one times six hundred eighty-five 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