Sapaad makes it incredibly easy to sell menu items by measurements. If you want to calculate the price of a menu item in grams:

Step 1: Visit Setup > Menu Setup.
Step 2: Click the Add Menu Item.
Step 3: Fill in the details of the menu item such as the name and price for 1 kilogram.
Step 4: Click Save.
Step 5: Finally, click the Refresh POS Menu Items button.

If 600 grams of a menu item is ordered, select the item from the POS Screen and change the quantity under QTY to 0.6 and the right amount will be charged.