Filament Weight Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the filament length in metres.
- Adjust diameter and density for your material if needed.
How it works
Weight = filament volume × density; volume comes from the diameter and length.
Worked example
100 m of 1.75 mm PLA. ≈ 298 g.
Common mistakes
- Using the wrong density — PLA ≈ 1.24, ABS ≈ 1.04, PETG ≈ 1.27 g/cm³.
- Mixing 1.75 mm and 2.85 mm filament.
Frequently asked questions
How do I know the length used?
Your slicer reports filament length (and often weight) for a print — enter that length here.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.