On a scale of one to ten, rate me as an interviewer.

I will give you a 10 out of 10. Because I rate myself 9 on 10. I think you are just a step above me.

Read most of the answer here and most of them starts with that you are not qualified enough to rate them. The trick to this question is not to please the interviewer, as most of them will do that. But it is to show your confidence and honesty. You can give any rating to the interviewer, but the reasoning should be unique and genuine.

Example:

It was pleasant talking to you. I was nervous when I entered, but I am not now. Rather I am confident. Thank you for being so understanding and calm. And this is the reason, I would give you a perfect 10.

(OR)

I have been to many interviews and surprisingly, I have met many such interviewers who do not have the right knowledge to judge the candidate. I was glad to see someone competent and knowledgeable like you interviewing me. I would give you a 9 on 10. However, I would like to ask you a question with your permission. When you ask candidates (write any question you didn't really see the point in), what are you expecting? [This answer is given when the interview has ended].

First of all, thanks for giving this opportunity to rate you, but I am sure I am not in such a condition or position to rate you. Anyway but as you have asked me this question so I think I am bound to answer this. Sir, I will rate you 9/10 as nobody in this world is 100% perfect everybody needs improvement.

Thank you once again, sir. Nice to meet you.

My opinion is you were being a HR for your best in this company but I am not in the position to judge you.

Logical answer:

My limited knowledge about you that I got in this limited period is not enough to answer that question.

If you let me observe you as you interview more candidates, you can have a more accurate 'estimate'.

But as far as now, being with you has been a good experience sir/ma'am.

So a rating of 8/10 with +/- 2 would be suitable for now.

Creative answer:

That's very easy! you rate me as a candidate, and rate the same for yourself as an interviewer!

Communication is a two-way highway. It's not effective without both parties being on same level.

Do you believe this interview was effective sir?

I give you 8 out of 10 really good and I am expecting more then to become a perfect HR but your really well.

First of all sir, I would like to give you thanks for giving me this opportunity. But I must sorry to say as a learner I do not suppose to give the ratings to my lenders. But I must say one thing that I am quite happy with this conversation and it really nice to talk to you, sir. Thank you once again.

Sorry, sir, I'm not on that level I can judge you but I feel nice to conversing with you.

Sir I'm not a suitable person for you to judge. But I'll give you 9/10 because no one is perfect in the world. Being the HR of the company you are very much friendly and it seems you are a person with a positive approach.

I think you are the one who rates the people on basis of their talent. So I'm not the right one to rate you because I can't judge people within a short period of time. Infact, this is a special ability of HR and I'm not HR.

If I'm ordered to rate you, I would give you 8/10 with +2 as complementary.