3D Print Time Calculator

Free 3D print time calculator: volume from cm³, bbox fill, or filament meters; layer height & line width path model; speed/travel overhead; donut & bar charts; scenario rows—plus guide. Not a slicer replacement.

3D Print Time Calculator | Volume, Path & Overhead Charts

Slicer reality check: Real print time depends on acceleration, jerk, minimum layer time, retracts, infill pattern, supports, and firmware. This page uses a transparent path-length + overhead model so you can compare orders of magnitude to Cura/Bambu/Orca estimates—not replace them.

Summary: Enter extruded volume (known cm³, bounding-box fill, or filament length × diameter), layer height and line width to infer a path length, then an average print speed plus travel overhead, per-layer pauses, and preheat. You get total time, a donut breakdown, sensitivity bar charts, and a scenario table.

Method (short)
  • Path length (mm): extruded volume mm³ ÷ (layer height × line width).
  • Motion time: path ÷ speed, then × (1 + travel overhead %) to approximate non-extrusion moves.
  • Layer overhead: ceil(model height ÷ layer height) × seconds per layer (cooling tab, Z hop, wipe).
  • Preheat / start: fixed seconds you type—proxy for bed/nozzle heat and homing.

3D print time calculator (path + overhead model)

Tune the knobs until your headline minutes sit near what the slicer preview shows—then you know which assumptions were off (usually speed or layer pauses).

Volume source
Solid volume

Use slicer “filament used” volume or mesh volume if hollow shells are excluded intentionally.

Motion & layers

In bbox mode, defaults track bbox Z—still editable.

Overhead

Print time estimate and charts will appear here.

For why slicers lie kindly about small layers, read 3D print time without magic firmware dust below.