3D Printing Filament Weight Calculator

  • PLA (1.24 g/cm³)
  • ABS (1.04 g/cm³)
  • PETG (1.27 g/cm³)
  • TPU (1.21 g/cm³)
  • Nylon (1.14 g/cm³)
  • Resin (1.1 g/cm³)
  • 1.75 mm
  • 2.85 mm
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Planning a 3D printing project and wondering how much material you'll need? Our Filament Weight Calculator estimates the exact weight, length, and cost of filament required for your prints, helping you plan spool purchases and budget accurately.

The calculator works with all common 3D printing materials — PLA, ABS, PETG, TPU, Nylon, and resin. Each material has a different density, and the tool automatically applies the correct conversion factor. Enter your print volume in cubic centimeters (found in your slicer software), select your material, and choose your filament diameter.

Weight is calculated simply as volume × density. Length calculation accounts for the filament's cylindrical shape — thinner 1.75mm filament stretches further per gram than 2.85mm filament. Most slicer software will give you a weight estimate directly, so you can use that as input here.

Cost estimates help you compare materials — premium filaments like carbon fiber reinforced nylon cost more per gram than basic PLA, but may require less material for equivalent strength. Always add a 10-20% buffer to account for purge lines, brims, and failed print attempts.

สูตร
Weight = Volume × Density ; Length = Weight ÷ (π × (Diameter/2)² × Density)

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How do I find print volume in cm³?
Your slicer software (Cura, PrusaSlicer, Simplify3D) typically shows estimated filament usage in grams and meters. Multiply gram weight by material density or check the g-code preview for volume estimates. Alternatively: Volume = Layer Height × Print Area.
How much filament is in a typical spool?
Most standard spools contain 1 kg of filament. For PLA, that's approximately 100-120 meters of 1.75mm filament. Specialty filaments like carbon fiber or infused materials often come in 500g spools.
Should I add a buffer to my filament estimate?
Yes — we recommend adding 10-15% extra to account for purge lines, failed prints, and material left on the nozzle. For complex prints with many supports, add 20-25% extra.
Is resin 3D printing cheaper than FDM?
Resin material costs about 3-5 times more per gram than standard FDM filament. However, resin prints require less material for solid, detailed parts. Compare costs using volume-based pricing, not just per-gram rates.