Investment Risk Capacity Survey

Here’s one of the more detailed surveys on the subject that I’ve encountered: http://www.ifa.com/surveynet/. Take the longer version (49 questions).

For the record, my total weighted score is 39%. 100% would be a person most capable of accepting risk, both emotionally and financially.

Fidelity myPlan Calculator

And this calculator is by far the most visually appealing and user-friendly, but I wouldn’t rely on the numbers it gives you. Read the numerous assumptions about how it estimates the figures:
http://personal.fidelity.com/planning/retirement/content/myPlanBanner/