How to Convert a DC Motor to a Stepper Motor: Methods and Feasibility

How to convert DC motor to Stepper motor ?

Basically, you can't.  They are two very different types of motors.

If you are asking if you can replace a DC motor with a stepping motor, you **MAY** be able to, but as David said they are two very different kinds of motors. With a DC motor, you apply voltage and it spins. A stepping motor will not do that.  A stepping motor contains a number of coils and a permanent magnet armature. It requires a specialized controller to apply voltage to the different coils to "step" the armature in the direction in which you want to go.If you can provide a bit more information about what you want to do we may be able to offer more advice.-Rick  

I read that we can convert a dc motor to behave like a stepper motor by installing a shaft position encoder on the shaft and connecting that to DC servo motor controller. Is it true ?