640 metric teaspoons in US quarts

Conversion formula
How to convert 640 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: 640 ⁢ brteaspoon ≈ 3.381402270184301 ⁢ usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 0.295735295625 times 640 metric teaspoons.

It can also be expressed as: 640 metric teaspoons is equal to $\frac{1}{\mathrm{0.295735295625}}$ US quarts.

Approximation

An approximate numerical result would be: six hundred and forty metric teaspoons is about three point three seven US quarts, or alternatively, a US quart is about zero point three zero times six hundred and forty metric teaspoons.