About the calculator

3D Filament Calculator is a small collection of practical tools for people who print with filament. It helps answer three questions: how much is left, how long is it, and what will the material cost?

Simple, visible calculations

We show the formulas and assumptions so you can check the result. Material density presets are approximate starting points, and you can replace them with values for your own filament.

This is an independent tool, not a slicer or a printer manufacturer’s service. It does not guarantee that a print will finish or estimate consumption from an unsliced model.

Help improve the tool

If you spot an issue, send us the inputs and the result you expected.