Average GRE scores tend to be lower than average GMAT scores. While it isn't necessary to worry about the conversion, it is important to ensure:
1) You score above average for the GRE at the schools to which you want to apply. While your score is approximately average for the schools in the Top 20 - 30 range - it is just hovering around average. If you think you can improve this score - go for it. Don't give a school a reason to turn you down.
2) More importantly the split is - as you mentioned - key. Depending on your profile, schools can put more emphasis on quant or qual (generally quant). Again you seem to be hovering around average.
However the importance of your test score - whether GMAT or GRE - must be taken within the context of your overall application.
1) Is your GPA above or below average? If above, it is less important to score above average on the test as well
2) What has been your focus in college and in your job? Do you have an analytical background? If not - you might want to consider increasing the quant score
3) How do you stand out in other factors of the application. While it is (somewhat) true that you can't change the rest of your profile now, you can analyze your profile to determine the importance of the GRE. Schools look at multiple factors when analyzing an application. If you are an average candidate across the board, than you might want to retake the GRE. If you have some amazing attributes that really make you standout - the GRE won't matter so long as you hit average and the school feels you can do the work.
It is very difficult to provide sound advice on whether or not to retake a test without understanding all parts of the puzzle. Furthermore, there is a time issue. Will studying for a new test prevent you from submitting amazing applications? I advise taking a holistic view prior to making a decision. If you would like to discuss further, please email me at
[email protected]. We can go through your entire profile to determine your best course of action.
Pamela
p.s. While it is true that you cannot dramatically change your profile at this point in time there are small things you can do - "quick wins." Take on a new project at work, take more of a leadership role in an existing extracurricular activity, etc.