3D Printing Time Calculator
The 3D printing time calculator estimates how long your print will take based on filament path length, print speed, and travel speed. 3D printing time depends on the total distance the printhead travels, which your slicer reports as filament length or path length. By dividing the print path distance by the average print speed and adding travel time, you get an estimated duration in hours and minutes. This is particularly helpful when planning a printing session, deciding whether to start a print overnight, or comparing the time cost of different quality settings. For best accuracy, use the path length figure from your slicer and check the slicer's own time estimate once sliced.
Print time formula
Print path length = Total path x (1 - travel fraction)
Travel path length = Total path x travel fraction
Print time (s) = Print path / Print speed (mm/s)
Travel time (s) = Travel path / Travel speed (mm/s)
Total time = Print time + Travel time
Travel fraction defaults to 25% (0.25). Adjust based on your slicer's reported travel vs. extrusion ratio.
Frequently asked questions
Why does my slicer time estimate differ from this calculator?
Slicer software uses a detailed per-move simulation accounting for acceleration, jerk, cooling pauses, and layer changes. This calculator uses a simplified average-speed model that gives a reasonable ballpark estimate. For precise timing, always rely on your slicer's estimate after slicing.
What is a typical 3D printer print speed?
Most FDM printers print between 40 and 80 mm/s for standard quality. High-speed printers like the Bambu Lab X1 can reach 200 to 500 mm/s. Faster speeds can reduce quality; slower speeds generally improve detail and layer adhesion.
How does layer height affect print time?
Thinner layers (e.g., 0.1 mm) require more passes and significantly increase print time compared to thicker layers (e.g., 0.3 mm). Doubling layer height roughly halves print time for the same model, but reduces fine detail.
What is travel speed in 3D printing?
Travel speed is the speed at which the print head moves between print segments without extruding filament. Travel moves are typically much faster than print moves (150 to 300 mm/s is common). Travel distance is usually 20 to 30% of total path length.
How accurate is this time estimate?
This estimate is accurate to within 10 to 20% for most prints. Actual time depends on acceleration settings, cooling time, retraction moves, and firmware limits. Use it for planning and budgeting, and verify with your slicer before starting critical prints.
Sources
- NIST: Additive Manufacturing at NIST.
- America Makes: National Additive Manufacturing Institute.
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.