That will depend greatly on the density of the item. 600g of flour and 600g of water will not be the same number of cups. Without knowing what you're measuring, I can't give you a precise conversion.
It equals about 2 and 1/2 cups
There are 2.61 cups is in 600 grams according to an online conversion calculator I found. http://www.gourmetsleuth.com/gram_calc.htm
600g = 21 oz (21.16437717)
600 grams of caster sugar is about two and a half cups of caster sugar. One cup is about 236.5 grams.
600g
That is 21.164 ounces
That is 21.164 ounces
21.1644 ozs.
600g = 21.2oz
600g = 21.2oz
600g
600g = 21.2oz