Measure yourself on the weighing scale. Compare your body weight to your height and get a safe estimate of how many kilos over or under-weight you are. Next, measure your Body Mass Index, as it is a safe estimate of how healthy or unhealthy your weight is. 
Your BMI = Your weight (in kilos) ÷ (your height in meters * your height in meters)
A BMI of less than 25 is considered healthy. A BMI of 25-29.9 is considered over-weight, and a BMI of 30+ is considered obese.