How many 16oz cups can i get from a 7 litre post mix box?

To determine how many 16 oz cups you can get from a 7-litre post mix box, first convert the volume of the box to ounces. Since 1 litre is approximately 33.814 ounces, 7 litres is about 236.6 ounces. Dividing 236.6 ounces by 16 ounces per cup gives you approximately 14.79 cups. Therefore, you can fill about 14 full 16 oz cups from a 7-litre post mix box.