The stepper motor calculator computes the pulse frequency, step time, and angular resolution needed to drive a stepper motor at a specific speed. Essential for CNC machines, 3D printers, and robotics.
Stepper Motor Calculator
How to Use a Stepper Motor Calculator
Stepper motors move in discrete increments (steps). A standard NEMA 17 motor has 200 full steps per revolution (1.8°/step). With 1/16 microstepping (typical in 3D printers), this becomes 3200 microsteps per revolution, giving 0.1125° resolution.
Microstepping Trade-offs
Higher microstepping reduces step noise and improves resolution, but requires faster pulse frequencies for the same RPM. At 1/256 microstepping, a 200-step motor needs 51,200 pulses per revolution. At 600 RPM, that's 512,000 Hz — requiring a fast microcontroller timer. Practical microstepping is usually limited to 1/16 or 1/32 for most applications.
FAQ
How do I calculate stepper motor pulse frequency?
Pulse frequency (Hz) = total steps per revolution × RPM / 60. Total steps = motor steps/rev × microstepping factor. For a 200-step motor at 1/16 microstepping running at 600 RPM: 200 × 16 × (600/60) = 32,000 Hz = 32 kHz. This is the frequency your controller needs to generate.
What is microstepping in stepper motors?
Microstepping divides each full step into smaller increments by controlling the current in each winding. 1/16 microstepping divides each 1.8° full step into 16 microsteps of 0.1125° each. This reduces motor noise and improves positional resolution but requires faster pulse frequencies for the same RPM.
What steps per revolution do most stepper motors have?
Most NEMA 17 and NEMA 23 stepper motors used in 3D printers and CNC machines have 200 steps per revolution (1.8° per step). Some higher-resolution motors have 400 steps/rev (0.9°). Smaller motors (like 28BYJ-48) have different configurations — check your motor's datasheet.
Is this stepper calculator free?
Yes, completely free with no signup required.