BMI Calculator: BMR & Calories

BMI is your weight in kilograms divided by your height in metres squared — BMI Calculator works this out for adults, along with estimated BMR and daily calories.

• BMI calculator – body mass index with category (Underweight, Normal, Overweight, Obese)
• Healthy weight range – for your height
• BMR calculator – estimated Basal Metabolic Rate using the Mifflin-St Jeor formula
• Calorie calculator – estimated daily calories to maintain your weight, based on your activity level
• Dark mode – system, light or dark theme
• Share – send any result to WhatsApp or email

Made for India: height entry in cm or feet/inches, whichever you're used to, with results in kg — the units used on Indian medical forms and gym check-ins.

Common questions

How is BMI calculated? BMI is your weight in kilograms divided by your height in metres squared. At 65 kg and 1.70 m that is 65 ÷ 2.89 = 22.5.

What is a healthy BMI? For adults, 18.5–24.9 is a commonly used healthy screening range. Indian clinical guidance may use lower thresholds for overweight and obesity. BMI is a screening guide, not a diagnosis.

What is a healthy weight for 170 cm? About 53.5 kg to 72.0 kg on the standard BMI range.

What is BMR? Basal Metabolic Rate is the energy your body uses at complete rest. This app estimates it with the Mifflin-St Jeor formula using your weight, height, age and sex.

How many calories a day do I need to maintain my weight? The app estimates this by applying your activity level to BMR. Actual calorie needs vary.

Does BMI work for children or athletes? This calculator is intended for adults. BMI can read high for muscular builds, so treat it as a starting point, not a diagnosis.

Privacy: works fully offline, no account, no personal data collected. Shows ads.

More from Sahi Apps: https://sahiapps.com/bmi-calculator/