Calculate linear print speeds, feedrates, and nozzle travel velocity limits based on hotend melt zone capacity and extruder stepper torque.
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How to Use Print Speed Calculator
Enter your hotend maximum volumetric flow rate (e.g. 15 mm³/s for standard, 32 mm³/s for high-flow Bambu/Volcano).
Enter target layer height (mm) and line width (mm).
Calculate the absolute maximum safe printing speed (mm/s) before under-extrusion occurs.
What is the Print Speed Calculator?
Calculates the maximum achievable linear printing velocity without exceeding the thermal melting limits of your hotend.
Formula Used
• Max Speed (mm/s) = Max Volumetric Flow (mm³/s) / (Layer Height (mm) × Line Width (mm))
Real-World Example
With a standard hotend (12 mm³/s flow limit) at 0.20mm layer height and 0.45mm line width:
• Max Speed = 12 / (0.20 × 0.45) = 12 / 0.09 = 133.3 mm/s.
Accuracy and Limitations
Assumes adequate cooling fan capacity and proper nozzle temperature.
Who It Is For
High-speed 3D printer tuners configuring Klipper, RepRap, and Marlin firmwares.
Frequently Asked Questions
What is the maximum speed I can print at?
Maximum speed is limited by hotend volumetric flow: Max Speed (mm/s) = Volumetric Flow Limit (mm³/s) / (Layer Height × Line Width). On a 0.4mm nozzle at 0.2mm layer height with a 24 mm³/s hotend, max speed is ~270 mm/s.