Materials Reference
Filament Density Chart: Every Material Compared
By Elena Rostova
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Updated October 2026
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5 min read
⚡ Why Density Matters:
In short, Lower density means more meters of plastic per 1kg spool. If you buy a 1kg spool of ABS (density 1.04 g/cm³), you get 400 meters of filament. If you buy a 1kg spool of dense PETG (density 1.27 g/cm³), you only get 327 meters. That is an extra 73 meters of free printing just by choosing a lighter polymer!
Comprehensive Polymer Specific Gravity Table
| Polymer Family | Density (g/cm³) | Meters per 1kg (1.75mm) | Feet per 1kg (1.75mm) | Weight Rank |
|---|---|---|---|---|
| PP (Polypropylene) | 0.90 | 463 m | 1,519 ft | Lightest (Floats in water) |
| ABS | 1.04 | 400 m | 1,312 ft | Very Light |
| ASA | 1.07 | 388 m | 1,273 ft | Light (UV Resistant) |
| Nylon (PA12) | 1.01 – 1.05 | 395 m | 1,295 ft | Light / Tough |
| Nylon (PA6) | 1.14 | 365 m | 1,197 ft | Medium |
| Carbon Fiber Nylon (PA-CF) | 1.20 | 346 m | 1,135 ft | Stiff / Rigid |
| TPU 95A (Flexible) | 1.21 | 343 m | 1,125 ft | Rubber-like |
| Standard PLA | 1.24 | 335 m | 1,100 ft | Medium-Heavy |
| PETG | 1.27 | 327 m | 1,072 ft | Heavy |
| Polycarbonate (PC) | 1.20 – 1.22 | 345 m | 1,131 ft | High Impact / Heat |
| PVB (Polysmooth) | 1.19 | 350 m | 1,148 ft | Alcohol Smoothable |
| Metal-Filled PLA (Bronze/Copper) | 2.80 – 3.90 | 110 – 150 m | 360 – 490 ft | Ultra Heavy (Short spool) |