What is a .6 liter?

Answer 1

Do you mean, "How much is .6 liters?"

A typical single serving water bottle is 500ml.
That's .5 liters or half a liter.
Its also equivalent to 16.9 fluid ounces.

So .6 liters would be a bit more than that and would be equal to 20.28 fluid ounces.

Answer 2

0.6 liters is equivalent to 600 milliliters or approximately 20.3 fluid ounces. It is a common unit of volume measurement used for liquids such as water, milk, or juice.