If you want to quickly calculate your BMI, you don't need to fill out the entire weight loss profile.
http://www.kristensguide.com/Health/Weight_Loss/weight_loss_profile_calculator.asp
Instead, you can go to the BMI calculator at
http://www.kristensguide.com/Health/Weight_Loss/bmi.asp
and just enter your height and weight (in metric or standard) to get a quick BMI readout.