Print Volume & Fill Calculator
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Bounding box volume and infill material from dimensions and infill percentage.
Bounding box
Infill volume
100 cm³
500 cm³ bounding box @ 20% infill
- Total volume
- 500 cm³
- Shell volume (est.)
- 400 cm³
Related calculators
Print volume and infill
Slicer infill percentage is the fraction of the interior filled with plastic — not the percentage of total print time or weight. A 20% infill cube still has solid walls (perimeters) and top/bottom solid layers on top of the sparse interior.
This calculator estimates the bounding box volume and the infill portion only. Actual filament use includes walls, roofs, supports, and brim — always check your slicer estimate for job cost.
Example: a 100 × 100 × 50 mm box is 500 cm³ total. At 20% infill, the sparse interior holds about 100 cm³ of filament before walls and solid caps.
Common questions
Does infill % equal weight %?
Roughly for the interior only. Perimeters, top/bottom layers, and supports add significant weight beyond the infill percentage.
What infill should I use?
15–20% is common for display models. 30–50%+ for functional parts. Cubes and gyroid patterns affect strength differently at the same percentage.