Calculate the real material cost of a 3D printed part from spool price and net weight. Separate model mass, supports, AMS purge, and additional waste to avoid pricing only the finished part.
Live Filament Cost per Gram Calculator
Editable planning assumptions. No sign-up or uploads required.
Calculation results
These are illustrative estimates, not guaranteed costs or fees. All money inputs must be expressed in the chosen denomination. The currency selector does not perform exchange-rate conversion.
Cost per gram equals spool price divided by net filament grams. Add supports and purge to finished-part mass, apply any extra waste percentage, and multiply the adjusted grams by cost per gram.
Worked example
A $25 spool with 1,000 g of filament costs $0.025 per gram. A 130 g model using 15 g of supports and 5 g of purge uses 157.5 g after 5% extra waste, costing about $3.94.
Common questions
Should I include support material?
Yes. Include supports, brims, rafts, and purge even though those grams are absent from the finished product.
What is the difference between spool weight and filament weight?
Use the net material mass printed on the packaging. The empty plastic spool is not included.
Does this calculator include electricity or labor?
No. It isolates material costing. Use the main pricing calculator for machine time, electricity, labor, and marketplace fees.
Does it support resin printers?
This tool measures filament in grams. Resin workflows need volume or mass, washing consumables, and cure time, so they require a different costing model.