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 420 gallons into teaspoons we have to multiply 420 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

420 gal → V_(tsp)

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

V_(tsp) = 420 gal × 768.00000000052 tsp

V_(tsp) = 322560.00000022 tsp

The final result is:

420 gal → 322560.00000022 tsp

We conclude that 420 gallons is equivalent to 322560.00000022 teaspoons:

420 gallons = 322560.00000022 teaspoons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 teaspoon is equal to 3.1001984126963E-6 × 420 gallons.

Another way is saying that 420 gallons is equal to 1 ÷ 3.1001984126963E-6 teaspoons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty gallons is approximately three hundred twenty-two thousand five hundred sixty teaspoons:

420 gal ≅ 322560 tsp

An alternative is also that one teaspoon is approximately zero times four hundred twenty 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