Filament length and weight

Turn metres of filament into grams and back, or weigh a spool to see how much is left on it. Slicers report both, but spools are sold by weight and sensors count length.

Weight

29.8 g

Weight per metre: 2.98 g
Length per kilogram: 335 m
Volume of plastic: 24.1 cm³

Length of common spool sizes
Spool	Length
250 g	83.8 m
500 g	168 m
750 g	251 m
1.00 kg	335 m
2.00 kg	671 m
3.00 kg	1006 m
5.00 kg	1676 m

For PLA at 1.75 mm. Real filament varies by a few percent in diameter and density, so treat the last digit as a guide. Want a price too? Try the filament cost calculator.

Common problems

Print not coming out right? These guides list the likely causes and fixes, easiest first.

Wet filament (popping, bubbles, fuzzy surface)
Filament snapping before the extruder

All troubleshooting guides