Filament left on spool
Gross weight − tare → grams and meters of 1.75 mm filament
Input
Remaining
0,3 g/m
620 г · 2 079 м
0,3 g per meter
1.75 mm filament: 1 m of PLA ≈ 3.0 g, PETG ≈ 3.05 g, ABS ≈ 2.5 g. Spool tare: 125–250 g (cardboard ~140 g, plastic ~230 g). Weigh an empty spool once and note it.