646 imperial gallons in US customary teaspoons

Conversion formula
How to convert 646 imperial gallons to US customary teaspoons?

We know (by definition) that: $1\mathrm{imperialgallon}\approx 922.329542787729\mathrm{usteaspoon}$

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

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

Conclusion: 646 ⁢ imperialgallon ≈ 595824.884640873 ⁢ usteaspoon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US customary teaspoon is equal to 1.67834547662899e-06 times 646 imperial gallons.

It can also be expressed as: 646 imperial gallons is equal to $\frac{1}{\mathrm{1.67834547662899e-06}}$ US customary teaspoons.

Approximation

An approximate numerical result would be: six hundred and forty-six imperial gallons is about five hundred and ninety-five thousand, eight hundred and twenty-four point eight eight US customary teaspoons, or alternatively, a US customary teaspoon is about zero times six hundred and forty-six imperial gallons.