690 US customary teaspoons in US quarts

Conversion formula
How to convert 690 US customary teaspoons to US quarts?

We know (by definition) that: $1\mathrm{usteaspoon}\approx 0.00520833333333333\mathrm{usquart}$

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

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

Conclusion: 690 ⁢ usteaspoon ≈ 3.5937499999999973 ⁢ usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 0.278260869565217 times 690 US customary teaspoons.

It can also be expressed as: 690 US customary teaspoons is equal to $\frac{1}{\mathrm{0.278260869565217}}$ US quarts.

Approximation

An approximate numerical result would be: six hundred and ninety US customary teaspoons is about three point five eight US quarts, or alternatively, a US quart is about zero point two eight times six hundred and ninety US customary teaspoons.