Know your print before you slice it
Drop an STL or 3MF to see it in 3D, measure its volume and work out how much filament it needs. Need it in CAD? Convert it to STEP.
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Filament calculator
Convert between filament length, weight and printed volume, or start from a model file and get the numbers for a solid print.
STL, 3MF -
Spool calculator
How many meters of filament are on a 0.5 to 4.5 kg spool, and how much volume you can print with it.
PLA, PETG, ABS, TPU, PA -
STEP converter
Turn a mesh into a STEP solid you can open in Fusion, FreeCAD or SolidWorks. Flat areas become single faces instead of thousands of triangles.
STL, 3MF to STEP
Release notes
- 19.10.2026
- New 3D viewer, 3MF support, STEP converter and a new look.
- 12.01.2019
- Added new materials.
- 09.01.2019
- Fixed file uploading.
- 07.01.2019
- Fixed a bug where hidden form fields were used in the calculation.