Estimate filament from STL
STL stores geometry, not printing settings. Here are the essential formulas.
Calculate STL ↗1. Model volume
For a closed mesh, sum the signed tetrahedron volumes of its triangles. Scaling every dimension by 2 increases volume eightfold.
2. Shells and infill
15% infill does not mean 15% weight. Outer walls and solid top/bottom layers add substantial material.
3. Mass and length
Weight depends on material density. Length also depends on filament diameter.
Mass (g) = extruded volume (cm³) × density (g/cm³)
Length (mm) = extruded volume (mm³) / [π × (diameter / 2)²]
4. Why print time is approximate
Without slicing, travel moves, accelerations, retracts and supports remain unknown. Confirm with Bambu Studio, OrcaSlicer or PrusaSlicer.
For a firm quote, slice the model using your actual printer profile.
Calculate STL ↗