What Does My BMI Mean? BMI 18.5 to 25 You are a healthy weight for your height BMI above 25 You are above a healthy weight for your height and losing some weight may be beneficial for your health BMI below 18.5 You are below a healthy weight for your height and may need some advice on healthy eating Whatever your BMI, Arthritis Action can help you with advice on more healthy eating, including losing weight and keeping to a healthy weight. You can calculate your BMI by clicking the following: Metric Imperial Weight Height Calculate Calculate