642 US customary teaspoons in dry gallons

Conversion formula
How to convert 642 US customary teaspoons to dry gallons?

We know (by definition) that: $1\mathrm{usteaspoon}\approx 0.00111896745751993\mathrm{drygallon}$

We can set up a proportion to solve for the number of dry gallons.

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

Conclusion: 642 ⁢ usteaspoon ≈ 0.7183771077277951 ⁢ drygallon

Conversion in the opposite direction

The inverse of the conversion factor is that 1 dry gallon is equal to 1.39202654043776 times 642 US customary teaspoons.

It can also be expressed as: 642 US customary teaspoons is equal to $\frac{1}{\mathrm{1.39202654043776}}$ dry gallons.

Approximation

An approximate numerical result would be: six hundred and forty-two US customary teaspoons is about zero point seven two dry gallons, or alternatively, a dry gallon is about one point three eight times six hundred and forty-two US customary teaspoons.