How much filament is left on the spool?
BetaBeta version. Check the file in your slicer before printing. Found a problem? Contact us.
Weigh the spool on a kitchen scale, enter the empty spool weight and see how many grams (and roughly how many meters) are left — and whether your part fits.
How it works — watch the video
- 1Weigh the spool (spool + filament) on a kitchen scale.
- 2Weigh an identical empty spool (the tare) and enter it.
- 3Enter how much the part uses (your slicer shows it) and check.
Empty spool tare weight varies by manufacturer, mold revision, and cardboard moisture. Weigh an identical empty spool on your scale to calculate net mass (total weight − tare). Length in meters is an illustrative estimate only, based on nominal diameter and the density stated on your filament's Technical Data Sheet (TDS). Always keep extra margin for purge lines, prime towers, brims, and supports.
Filament diameter
Check your specific spool's Technical Data Sheet (TDS) — additives (e.g., Silk, +/Pro, fibers, matte) change actual density.
Enter the spool weight and the empty spool weight.
1 kg Prusament spools feature inner approximate length markings and an individual QR/ID code for lookup on the manufacturer's website.