E-Steps Calculator
Calculate your corrected extruder E-steps value from a simple measurement.
E-steps (extruder steps per mm) tells your printer how many motor steps equal 1mm of filament movement. If this number is wrong you get under-extrusion (gaps, weak parts) or over-extrusion (blobs, poor surface finish). Calibrating E-steps takes about 10 minutes and is one of the highest-impact calibrations you can do. Most Creality printers ship with a default of 93 steps/mm which is often slightly off — this calculator gives you the corrected value from a simple measurement.
Find this via M503 in your terminal — look for the M92 E value
The length you told the printer to extrude — typically 100mm
Measure from your mark to where filament entered the extruder
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Enter current E-steps, commanded length, and actual measured length above
How to Calibrate E-Steps (Step by Step)
FAQ
What are E-steps on a 3D printer?
E-steps (extruder steps per mm) is the number of motor steps your printer needs to move 1mm of filament. If set incorrectly your printer either pushes too little filament (under-extrusion — gaps and weak layers) or too much (over-extrusion — blobs and stringing). Calibrating E-steps is one of the first things to do on a new printer.
How do I find my current E-steps value?
Connect to your printer via a terminal (OctoPrint, Pronterface, or your slicer's terminal). Send M503 and look for a line starting with M92 — the E value is your current E-steps. Common defaults: Creality = 93, Prusa MK4 = 415, Voron = 417.
Do I need to calibrate E-steps on a Bambu Lab printer?
No. Bambu Lab printers use closed-loop extrusion with a load cell — they self-calibrate. Instead use Bambu Studio's built-in flow calibration tool for flow rate tuning.
How often should I recalibrate E-steps?
E-steps rarely change after initial calibration unless you replace the extruder motor, extruder gears, or change from a bowden to direct drive setup. If you start seeing consistent under or over extrusion after a hardware change, re-run the calibration.
What is the difference between E-steps and flow rate?
E-steps is a firmware-level calibration that applies to all materials. Flow rate (extrusion multiplier) is a per-material slicer setting. Calibrate E-steps first — get it within 1–2% — then fine-tune flow rate per material in your slicer.
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Price your prints once your printer is calibrated
Accurate E-steps means accurate filament usage — which means accurate cost calculations. Try the free calculator to price your prints.