You step on the scale and see 180 pounds. You are 5'10" tall. Is that healthy weight for your height? Simply looking at the number doesn't tell you. You need to know what weight is appropriate for your height. You could calculate manually using the formula: BMI = weight (pounds) × 703 ÷ height (inches)². It requires multiple steps and conversions. Or you could use a BMI calculator to instantly show your BMI is 25.8, which falls into the "overweight" category. A BMI calculator computes your Body Mass Index by taking your weight and height, calculating the ratio, and showing where you fall on the health categories (underweight, normal, overweight, obese). BMI calculators are used by people monitoring their health, doctors assessing patients, fitness professionals evaluating clients, researchers analyzing populations, and anyone curious about their health metrics. In this comprehensive guide, we will explore what BMI is, how calculators compute it, what the results ...