Conversion formula

The conversion factor from tablespoons to gallons is 0.0039062500000132, which means that 1 tablespoon is equal to 0.0039062500000132 gallons:

1 tbsp = 0.0039062500000132 gal

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

1 tbsp → 0.0039062500000132 gal

21 tbsp → V_(gal)

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

V_(gal) = 21 tbsp × 0.0039062500000132 gal

V_(gal) = 0.082031250000277 gal

The final result is:

21 tbsp → 0.082031250000277 gal

We conclude that 21 tablespoons is equivalent to 0.082031250000277 gallons:

21 tablespoons = 0.082031250000277 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 12.190476190435 × 21 tablespoons.

Another way is saying that 21 tablespoons is equal to 1 ÷ 12.190476190435 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty-one tablespoons is approximately zero point zero eight two gallons:

21 tbsp ≅ 0.082 gal

An alternative is also that one gallon is approximately twelve point one nine times twenty-one tablespoons.

Conversion table

tablespoons to gallons chart

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