Filament meters to grams
Filament is a long cylinder, so its weight is simply volume × density. The cross-section of 1.75 mm filament is 2.405 mm², so every meter holds 2.405 cm³ of plastic.
Grams per meter = π × (diameter ÷ 2)² × density
1.75 mm PLA = 2.405 × 1.24 = 2.98 g/m → 335 m per kg
Meters per 1 kg spool (1.75 mm)
| Material | Density | Meters per kg |
|---|---|---|
| PLA | 1.24 g/cm³ | 335 m |
| PETG | 1.27 g/cm³ | 327 m |
| ABS | 1.04 g/cm³ | 400 m |
| ASA | 1.07 g/cm³ | 389 m |
| TPU | 1.21 g/cm³ | 344 m |
| Nylon | 1.14 g/cm³ | 365 m |
2.85 mm filament holds about 2.65 times more plastic per meter, so a 1 kg spool is only about 126 m of PLA.
Frequently asked questions
How many meters are in a 1kg spool of PLA?
About 335 m of 1.75 mm PLA, or about 126 m of 2.85 mm PLA.
How much does 1 meter of filament weigh?
About 3 g for 1.75 mm PLA or PETG, and about 2.5 g for ABS.