BMI Calculator Grown ups Child Enter Your Information to Calculate Your Body Mass Index Gender: Male Female Height: ft in Weight: pounds Enter Your Information to Calculate Your Body Mass Index Child BMI calculator is only valid for children between 2 and 20 years. Gender: Male Female Age: (Jahre) 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Height: inches Weight: pounds