How many meters of filament are in a 1 kg spool?
| Material | Density | 1.75 mm: m per kg | 2.85 mm: m per kg |
|---|---|---|---|
| PLA | 1.24 g/cm³ | 335 m | 126 m |
| PETG | 1.27 g/cm³ | 327 m | 123 m |
| ABS | 1.04 g/cm³ | 400 m | 151 m |
| ASA | 1.07 g/cm³ | 389 m | 146 m |
| TPU (flexible) | 1.21 g/cm³ | 344 m | 130 m |
| Nylon (PA) | 1.14 g/cm³ | 365 m | 138 m |
| Polycarbonate (PC) | 1.2 g/cm³ | 346 m | 131 m |
| HIPS | 1.04 g/cm³ | 400 m | 151 m |
| PVA (support) | 1.23 g/cm³ | 338 m | 127 m |
Typical densities; brands and blends vary by a few percent. Enter your spool’s exact density in the calculator if you know it.
How do you convert filament meters to grams?
Work out the filament’s cross-section area, multiply by the length to get its volume, then multiply by density. For 1.75 mm filament the cross-section is π × 0.0875² ≈ 0.024 cm², so one meter (100 cm) is about 2.41 cm³ — 2.98 g of PLA at 1.24 g/cm³.
When do I need this?
When a slicer reports filament in meters but you price by weight, when a sample or spool end is sold by length, or when you want to check whether a partly used spool will finish a print — for that, the filament remaining calculator works from the spool’s weight.
Frequently asked questions
Why does ABS give more meters per kilogram than PETG?
ABS is less dense (about 1.04 g/cm³ versus about 1.27 for PETG), so the same weight takes up more volume and makes a longer strand.
Is 1.75 mm filament exactly 1.75 mm?
Usually within a few hundredths of a millimeter. That small variation changes the weight per meter by a few percent, which is why converted figures are approximate.
Does color change the weight?
Pigments and fillers change density slightly; silk, glow, wood and metal-filled filaments can differ more. Use the density from the datasheet for those.
Estimates for planning. Results depend on the numbers you enter — use the gram, hour and ml figures from your slicer, and your real material and power prices. Material densities are typical values; check your spool or bottle datasheet for exact figures.