How can i covert my 220v receptacle to 120v? ...


Answers:    Rewire it according to the electric code. Or just append a new 120 volt circuit similar to you ought to do.
The only difference is in attendance are 2 black (hot) wires on the back of the receptacle. Take one bad (with the breaker turned off) and cap it near a wire nut and wrap it beside electric tape. Or if you are going to stipulation a new 120 V plug, merely hook up one black and one white. Simple enough?