<p>For the common app supplement, about how long should the essay be? There is no guideline on the site, and my rough draft is fast approaching 700 words.</p>
<p>copy and paste what you have to try it out.
When you hit the limit..it'll complain and give you the limit.
I'm pretty sure they count it in the number of characters rather than words. You can just copy and paste a long essay you wrote before just to test it out.</p>