Health and Fitness Calculator

Health & Fitness Calculator

Weight (kg): Height (cm): Age: Gender: Male Female

BMI: 0

BMR: 0 kcal/day

Standards of BMI and BMR

Body Mass Index (BMI) Standards

BMI (Body Mass Index) is a measure of body fat based on height and weight. It is commonly used to classify individuals into weight categories that may indicate health risks. (For Detail: WHO)

BMI Categories:

BMI Range	Category
Below 18.5	Underweight
18.5 - 24.9	Normal weight
25 - 29.9	Overweight
30 - 34.9	Obesity (Class 1)
35 - 39.9	Obesity (Class 2)
40 and above	Extreme Obesity (Class 3)

A BMI below 18.5 suggests a risk of malnutrition, while a BMI above 25 may indicate an increased risk of lifestyle diseases like diabetes and hypertension. However, BMI does not differentiate between fat and muscle mass, making it less accurate for athletes or muscular individuals.

 

Basal Metabolic Rate (BMR) Standards

BMR (Basal Metabolic Rate) is the number of calories your body needs to perform basic functions such as breathing, circulation, and cell production while at rest. It varies based on age, gender, weight, and muscle mass.

Average BMR Estimates:

Category	Average BMR (kcal/day)
Men	1,600 - 2,000 kcal/day
Women	1,200 - 1,500 kcal/day

A higher BMR means the body burns more calories at rest, which is influenced by muscle mass and metabolic health. Regular exercise, especially strength training, can increase BMR over time.

BMR is essential for determining daily calorie needs. By multiplying BMR by an activity factor (sedentary to very active), one can estimate Total Daily Energy Expenditure (TDEE), which helps in setting weight management goals.