BMI Calculator (Body Mass Index Calculator) is a free health tool that calculates your Body Mass Index based on your height and weight. BMI is a standard medical screening tool that tells whether you are underweight, normal weight, overweight, or obese. Our BMI Calculator at TammanTools uses the official WHO formula: BMI = weight (kg) / height² (m²). It is the most accurate and easy-to-use BMI calculator online, used by doctors, fitness trainers, and health-conscious people in Pakistan and worldwide. Knowing your BMI helps you understand your health risk and take steps towards a healthier lifestyle.
Using our BMI Calculator is very simple and takes 10 seconds. Step 1: Enter your height in centimeters (cm), for example 170 cm. If you know height in feet, convert: 5'7 = 170 cm. Step 2: Enter your weight in kilograms (kg), for example 70 kg. Step 3: Click Calculate BMI button. Instantly you will see your BMI value like 24.2 and category like Normal Weight. The tool works in your browser, no data is stored, completely private and free.
According to World Health Organization (WHO), BMI categories are: Underweight: BMI less than 18.5 - You may need to gain weight. Consult doctor for healthy diet. Normal Weight: BMI 18.5 to 24.9 - Healthy weight, keep maintaining with balanced diet and exercise. Overweight: BMI 25 to 29.9 - Slightly above healthy weight, consider diet control and exercise to avoid health issues. Obese: BMI 30 and above - Higher health risk for diabetes, heart disease. Consult doctor for weight management plan. Note: BMI is a screening tool, not diagnostic. Athletes with high muscle mass may have high BMI but still healthy. Always consult doctor for medical advice.
Checking BMI regularly is important for maintaining good health. 1. Health Risk Assessment: High BMI is linked to diabetes, high blood pressure, heart disease, and joint problems. Low BMI can indicate malnutrition or other health issues. 2. Fitness Goal Tracking: If you are on weight loss or weight gain journey, BMI helps track progress. 3. Diet Planning: Knowing if you are underweight or overweight helps you plan proper diet with nutritionist. 4. For All Ages: Useful for adults, teenagers (with age adjustment), and even for parents checking children's growth. In Pakistan, where lifestyle diseases are increasing, BMI checking is essential for preventive healthcare.
For Pakistani population, ideal BMI is same as WHO standard. Average height in Pakistan is around 167 cm for men and 157 cm for women. If your BMI is above 25, consider reducing oily foods, paratha, sugary chai, and increasing walking, vegetables, and water intake. If BMI is below 18.5, include more protein like eggs, lentils (daal), chicken, and milk. Our calculator is in metric units (cm, kg) which is standard in Pakistan for CNIC and medical records. You can also use it to calculate BMI for your family members quickly.
Ideal BMI for both men and women is 18.5 to 24.9 according to WHO. This range indicates healthy weight with lowest health risks.
BMI is accurate for most adults aged 18-65. It may not be accurate for athletes with high muscle, pregnant women, or elderly people with muscle loss. For children, BMI-for-age chart is used.
Convert feet to cm first: 1 foot = 30.48 cm. So 5 feet 6 inches = 167.64 cm. Enter that in our calculator. Or use formula: BMI = 703 x weight(lbs) / height(inches)² if using imperial.
No, we never store your data. Calculation happens in your browser only, completely private.
BMI is a screening tool that indicates risk, but not a diagnosis. High or low BMI suggests you should consult doctor for full health checkup.