## 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

gallons (gal) teaspoons (tsp)
22 gallons 16896 teaspoons
23 gallons 17664 teaspoons
24 gallons 18432 teaspoons
25 gallons 19200 teaspoons
26 gallons 19968 teaspoons
27 gallons 20736 teaspoons
28 gallons 21504 teaspoons
29 gallons 22272 teaspoons
30 gallons 23040 teaspoons
31 gallons 23808 teaspoons