Thiscalculator will help you to find out the Ideal Weight for a given Height (cm) and Sex. For example, it can help you find out what is the Ideal Weight for 186 cm Male in kg? (The answer is: 80.4 kg). Enter Height (e.g. 186 cm), Sex Howto Calculate BMI. BMI Formula: BMI = weightkg ÷ (heightm)2. According to Body Mass Index (BMI) Formula if you want to calculate BMI for Weight 85 kg and Height 180 cm r8oPTl.