664 metric teaspoons in US quarts

Conversion formula
How to convert 664 metric teaspoons to US quarts?

We know (by definition) that: $1\mathrm{brteaspoon}\approx 0.00528344104716297\mathrm{usquart}$

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: 664 ⁢ brteaspoon ≈ 3.508204855316212 ⁢ usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 0.285046068072289 times 664 metric teaspoons.

It can also be expressed as: 664 metric teaspoons is equal to $\frac{1}{\mathrm{0.285046068072289}}$ US quarts.

Approximation

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