You can calculate your ideal weight by filling in the blanks on the WebMD page. Yes, they have something to sell, but you don't have to buy it to get the ideal weight readout. The email address is optional as well.

You fill out the blanks on one page, then on the next page and so on. If you persevere you really, really do get to a page that tells you not only your ideal weight, but also your BMI (body mass index), the most that your BMI should be and what your BMI would be at your ideal weight.

They want you to sign up for a $4.99 per week weight loss program that translates into $64.87 out front. If you decide to try it let me know how it works.