Conversion formula

The conversion factor from gallons to teaspoons is 768.00000000052, which means that 1 gallon is equal to 768.00000000052 teaspoons:

1 gal = 768.00000000052 tsp

To convert 21 gallons into teaspoons we have to multiply 21 by the conversion factor in order to get the volume amount from gallons to teaspoons. We can also form a simple proportion to calculate the result:

1 gal → 768.00000000052 tsp

21 gal → V_(tsp)

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

V_(tsp) = 21 gal × 768.00000000052 tsp

V_(tsp) = 16128.000000011 tsp

The final result is:

21 gal → 16128.000000011 tsp

We conclude that 21 gallons is equivalent to 16128.000000011 teaspoons:

21 gallons = 16128.000000011 teaspoons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 teaspoon is equal to 6.2003968253926E-5 × 21 gallons.

Another way is saying that 21 gallons is equal to 1 ÷ 6.2003968253926E-5 teaspoons.

Approximate result

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

21 gal ≅ 16128 tsp

An alternative is also that one teaspoon is approximately zero times twenty-one gallons.

Conversion table

gallons to teaspoons chart

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