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Creality Ender 3 V3 KE extrusion calibration (rotation_distance)

The stock Creality Ender 3 V3 KE rotation_distance is 7.53 mm per revolution. That is the starting point in its Klipper config — tune it once with the mark-and-measure test and the extruder tracks reality. The rotation distance & e-steps calculator does the correction math and prints the exact line to paste; the full calibration guide explains the test in detail.

7.53

stock rotation_distance (mm per revolution) — Creality Ender 3 V3 KE

PrinterCreality Ender 3 V3 KE
Stock firmwareKlipper (rotation_distance)
ExtruderSprite-style dual-gear direct drive
Stock default7.53 mm per revolution
Worked example100 mm requested, 97 mm measured → 7.3041

The V3 KE runs Creality’s Klipper-based OS out of the box, so extrusion is tuned with rotation_distance in printer.cfg — there are no e-steps to set, and M92 does not apply. This default comes from the manufacturer’s own firmware or config. Source.

How to calibrate on the Creality Ender 3 V3 KE

  1. Heat the hotend to normal print temperature and mark the filament exactly 120 mm above the extruder inlet with a ruler and a fine marker or tape flag.
  2. Extrude 100 mm slowly. From a console send G91, then G1 E100 F60 — slow, so back-pressure does not skew the measurement. If Klipper rejects the move, set max_extrude_only_distance to at least 101 under [extruder] and RESTART first.
  3. Measure what actually went through. Measure from the inlet to the mark again — actual extrusion is 120 − remainder (23 mm remaining means 97 mm extruded).
  4. Compute the new value. new rotation_distance = old × actual ÷ requested — with the stock 7.53 and 97 mm measured: 7.53 × 97 ÷ 100 = 7.3041. Note the direction: under-extrusion pushes rotation_distance down. The calculator does this arithmetic for you.
  5. Save in printer.cfg. Paste rotation_distance: 7.3041 under [extruder], then RESTART. Klipper has no M500 — the config file is the save.
  6. Confirm. Repeat the test once; the mark should land 20 mm from the inlet. Within about ±0.5 mm is measurement noise, not a reason to iterate.

Notes for the Creality Ender 3 V3 KE

Creality’s Klipper fork exposes printer.cfg through the web UI (Fluidd-style) once the machine is on your network. Edit rotation_distance under [extruder], then RESTART — Klipper has no M500-style runtime save for this.

Frequently asked questions

What is the stock rotation distance on the Creality Ender 3 V3 KE?
The stock rotation_distance is 7.53 mm per motor revolution. This default comes from the manufacturer’s own firmware or config. Run the mark-and-measure test once to tune it for your specific machine.

How do I change rotation distance on the Creality Ender 3 V3 KE?
Edit rotation_distance under [extruder] in printer.cfg and send RESTART (or paste the new value and use SAVE_CONFIG if you set it via a console macro). Klipper has no M500 — the value lives in the config file.

What is the formula for the new rotation_distance?
new rotation_distance = old × actual ÷ requested. If you asked for 100 mm and measured 97 mm, the value goes down: 7.53 × 97 ÷ 100 = 7.3041. This is inverted versus Marlin e-steps, which go up for the same under-extrusion.

Can I use e-steps (M92) on the Creality Ender 3 V3 KE?
No — the Creality Ender 3 V3 KE runs Klipper, which only understands rotation_distance. M92 has no effect. If a guide gives you e-steps, convert: rotation_distance = (full steps per rotation × microsteps) ÷ steps per mm, accounting for any gear_ratio in the config.

How often should I recalibrate extrusion on the Creality Ender 3 V3 KE?
After any change in the drive path — extruder gears, motor, hotend or extruder assembly — and whenever every print shows consistent over- or under-extrusion across filaments. It survives filament swaps; per-filament differences belong in the slicer’s flow setting, not in rotation_distance.

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