How to calculate filament cost
Find the cost per gram, multiply it by the grams used, then add your waste allowance.
(spool price ÷ spool weight) × grams used × (1 + waste ÷ 100)
Example
A AED 75, 1 kg spool costs AED 0.075 per gram. A 50 g print with 5% waste uses 52.5 g and costs AED 3.94 in filament.