Body Mass Index - Find out if you are overweight (and how much you need to lose), underweight or at your ideal weight Enter weight (kg) Enter height (m) Body Mass Index What it means Upper weight limit for your height(Kg) Minimum weight to lose(Kg) Number of weeks to lose at 0.46 Kg per week         Lower weight limit for your height(Kg) DISCLAIMER - the results here are for information only. BMI is an indicator, and must only be used in conjunction with advice from a qualified fitness or medical professional. BMI results do not apply to bodybuilders and pregnant women.