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BMI Calculator
BMI Calculation
Measurement Units: Kilograms and meters (or centimeters)
Formula and Calculation: weight (kg) / [height (m)]2
With the metric system, the formula for BMI is weight in kilograms divided by height in meters squared. Because height is commonly measured in centimeters, divide height in centimeters by 100 to obtain height in meters.
Example: Weight = 68 kg, Height = 165 cm (1.65 m)
Calculation: 68 ÷ (1.65)2 = 24.98
Measurement Units: Pounds and inches
Formula and Calculation: weight (lb) / [height (in)]2 x 703
Calculate BMI by dividing weight in pounds (lbs) by height in inches (in) squared and multiplying by a conversion factor of 703.
Example: Weight = 150 lbs, Height = 5’5″ (65″)
Calculation: [150 ÷ (65)2] x 703 = 24.96
BMI: Below 18.5
Weight Status: Underweight
BMI: 18.5 – 24.9
Weight Status: Healthy Weight
BMI: 25.0 – 29.9
Weight Status: Overweight
BMI: 30.0 and Above
Weight Status: Obesity
Basal Metabolic Rate (BMR)
Calculating your basal metabolic rate is easy; all you need to measure is your weight and height, although your age and sex also come into play. The calculators for both sexes are as follows:
For Men: BMR = 66.5 + (13.75 * weight in kg) + (5.003 * height in cm) - (6.75 * age)
For Women: BMR = 655.1 + (9.563 * weight in kg) + (1.850 * height in cm) - (4.676 * age)
To increase your BMR (basal metabolic rate), you can try:
Eating more protein in every meal.
Doing more HIIT (high-intensity interval training) workouts.
Increasing your daily activity – choose stairs over the elevator, walk more, switch to a standing desk.
Eating more spicy foods.
Doing more resistance workouts – muscles burn more calories than fat tissue.
Calorie: To determine your total daily calorie needs, multiply your BMR by the appropriate activity factor, as follows:
Sedentary (little or no exercise): calories = BMR × 1.2;
Lightly active (light exercise/sports 1-3 days/week): calories = BMR × 1.375;
Moderately active (moderate exercise/sports 3-5 days/week): calories = BMR × 1.55;
Very active (hard exercise/sports 6-7 days a week): calories = BMR × 1.725;
Extra active (very hard exercise/sports & a physical job): calories = BMR × 1.9.
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