Here is a link for the Dosha Quiz from LifeSpa . I really love this company. Dr John Douillard is full of Ayurveda knowledge and he challenges it with Western Scientific studies.There are a ton of informational documents and videos for every Ayurveda topic. Their Quiz is one of my favorites.
This is the link to Banyan Botanicals Dosha Quiz. This one is a bit longer and online. They will email the results. This company is utterly exspansive with articles and teaching on every Ayurveda topic. Their herbs and herbal remedies are among of my favorite lists.