21 US gallons in metric teaspoons

Conversion formula
How to convert 21 US gallons to metric teaspoons?

We know (by definition) that: $1\mathrm{usgallon}\approx 757.0823568\mathrm{brteaspoon}$

We can set up a proportion to solve for the number of metric teaspoons.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 21 ⁢ usgallon ≈ 15898.7294928 ⁢ brteaspoon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 metric teaspoon is equal to 6.28981077043211e-05 times 21 US gallons.

It can also be expressed as: 21 US gallons is equal to $\frac{1}{\mathrm{6.28981077043211e-05}}$ metric teaspoons.

Approximation

An approximate numerical result would be: twenty-one US gallons is about fifteen thousand, eight hundred and ninety-eight point seven two metric teaspoons, or alternatively, a metric teaspoon is about zero times twenty-one US gallons.