640 centiliters in US quarts

Conversion formula
How to convert 640 centiliters to US quarts?

We know (by definition) that: $1\mathrm{centiliter}\approx 0.0105668820943259\mathrm{usquart}$

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 ⁢ centiliter ≈ 6.762804540368576 ⁢ usquart

Conversion in the opposite direction

The inverse of the conversion factor is that 1 US quart is equal to 0.1478676478125 times 640 centiliters.

It can also be expressed as: 640 centiliters is equal to $\frac{1}{\mathrm{0.1478676478125}}$ US quarts.

Approximation

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