Is it safe to run a 120V outlet for a microwave from a 240V electric range outlet?

Answer 1

for USA, Canada and countries running a 60 Hz power supply service.

NO because THIS IS NOT SAFE!

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If the 240 Volt range outlet is no longer supplying power to any range or kitchen stove, then it might be possible, but only a licensed electrician can check if it is safe to do so and, to avoid serious fire hazard, tell you what changes would have to be made to the breakers supplying the present range circuit on your main supply panel.

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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

If you do this work yourself, always turn off the power

at the breaker box/fuse panel BEFORE you attempt to do any work

AND

always use a meter or voltage indicator

to insure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.