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Filament Cost-per-Gram Calculator

A cheaper spool isn't always better value if it weighs less. Get the real cost per gram and the material cost for any print.

Enter your numbers

$
grams
Filament weight, not including the spool itself.
grams

Results update as you type — no button needed.

Result

  • Cost per kg—
  • Material cost of this print—
Cost per gram—

How it's calculated

Cost per gram = spool price ÷ net weight. Print material cost = cost per gram × grams used.

Assumptions
  • Use the NET filament weight (e.g. 1000 g), not gross weight including the spool.

FAQ

Why cost per gram and not per spool?
Spools come in 0.5, 0.75, 1, and 2.3 kg sizes. Cost per gram is the only fair way to compare prices across brands and sizes.

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3D Print Cost CalculatorFilament Length → Weight Calculator
Disclaimer: These calculators are provided for guidance only and use representative material constants and published marketplace fee rates (as of June 2026). Real costs vary — always verify against your own figures before pricing or purchasing. PrintProfit is reader-supported and may earn a commission from links to recommended products, at no extra cost to you.