3D Print Time Estimator
Reference Tables
Recommended Layer Heights
Typical Print Speeds
How It Works
This calculator estimates 3D printing time using layer-based calculations combined with printer speed parameters:
Core Formula
Total Time = Layer Time × Number of Layers + Travel Time
- Number of Layers = Model Height / Layer Height
- Layer Area calculated from volume and dimensions
- Print Time per Layer = (Perimeter Length / Perimeter Speed) + (Infill Area / Print Speed)
- Travel Time estimated at ~5-15% of total print time depending on complexity
- Filament Weight = Volume × Density (PLA = 1.24 g/cm³)
- Filament Length = Weight / (Density × π × (1.75mm/2)²) for 1.75mm filament
Why actual times may differ
This calculator uses simplified geometry assumptions. Actual print time depends on model complexity, retraction count, acceleration settings, jerk/junction deviation, cooling time for small layers, and slicer-specific optimizations. Complex models with many details will take longer than simple cubic shapes of the same volume. Always add 10-20% buffer time for important prints.
Frequently Asked Questions
How accurate is the 3D print time estimate?
This calculator provides a reasonable estimate based on your inputs, but actual print times can vary by 10-30% depending on acceleration settings, retraction count, complex geometries, travel moves, and slicer-specific optimizations. Always add buffer time for critical prints.
What layer height should I use?
For standard quality, use 0.2mm. For fine details, use 0.1mm or 0.12mm. For faster drafts, use 0.28mm or 0.3mm. Layer height should typically be 25-75% of your nozzle diameter (e.g., 0.1-0.3mm for a 0.4mm nozzle).
How much does infill affect print time?
Infill percentage significantly impacts print time. Going from 20% to 100% infill can double or triple print time. Most functional prints work well with 15-25% infill. Only use high infill (50%+) for parts requiring maximum strength.
How do I calculate my model volume?
Most slicing software (Cura, PrusaSlicer, Simplify3D) displays model volume in the print preview. You can also use CAD software or online STL analyzers to find volume. If you know the dimensions, switch to "Dimensions" mode and enter length, width, and height.
How is filament cost calculated?
Filament cost is based on typical PLA pricing of $20 per kilogram. The calculator estimates filament weight from volume (using PLA density of 1.24 g/cm³) and applies this rate. Adjust your expectations for specialty filaments which can cost $30-50/kg or more.
What's the difference between print speed and travel speed?
Print speed is the nozzle movement speed while extruding plastic. Travel speed is how fast the nozzle moves when not printing (moving between features). Travel speed is typically 2-4x faster than print speed and doesn't significantly impact quality.
Privacy & Limitations
- All calculations run entirely in your browser -- nothing is sent to any server.
- Results are computed using standard formulas and should be verified for critical applications.
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3D Print Time Estimator FAQ
How accurate is the 3D print time estimate?
This calculator provides a reasonable estimate based on your inputs, but actual print times can vary by 10-30% depending on acceleration settings, retraction count, complex geometries, travel moves, and slicer-specific optimizations. Always add buffer time for critical prints.
What layer height should I use?
For standard quality, use 0.2mm. For fine details, use 0.1mm or 0.12mm. For faster drafts, use 0.28mm or 0.3mm. Layer height should typically be 25-75% of your nozzle diameter.
How much does infill affect print time?
Infill percentage significantly impacts print time. Going from 20% to 100% infill can double or triple print time. Most functional prints work well with 15-25% infill. Only use high infill for parts requiring maximum strength.
How do I calculate my model volume?
Most slicing software (Cura, PrusaSlicer, Simplify3D) displays model volume in the print preview. You can also use CAD software or online STL analyzers to find volume. Enter dimensions directly, or calculate volume in cm cubed.