Spool Life Calculator — How Long Will a Spool Last?
Estimate how many prints and how many weeks you can get from one spool of filament.
Weight of filament on the spool
Total weight of the model or component
Value for prints per week
Percentage value
How We Calculate This
Formula
- Usable weight = Spool weight x (1 - Waste %)
- Total prints = Usable weight / Average print weight
- Duration = Total prints / Prints per week
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify settings with test prints before committing to final prints.