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Underweight
< 18.5
Nutritional deficiency risk
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BMI Calculator
Free BMI Calculator online. Check your Body Mass Index, healthy weight range and BMI chart in seconds. Nothing is stored.
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22.5
✓ Normal Weight
Calculate Your BMI
Three quick steps. Results stay on this device.
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Personal Health Dashboard
A complete breakdown of your BMI, health risks, and personalised action plan.
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kg/m²
Your BMI Score
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Health Spectrum
15 — 40
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Healthy Weight Range
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What It Means
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Daily Calorie Estimate
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Estimated maintenance calories (Mifflin-St Jeor)
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Recommendation
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Health Considerations
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Action Steps
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Personalised Wellness Insight
Complete the calculator above to unlock your full health analysis.
BMI Chart
Use this BMI chart with the free BMI Calculator to see where your Body Mass Index falls.
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Normal
18.5 – 22.9
Healthy range for Indians
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Overweight
23.0 – 24.9
Elevated metabolic risk
!!
Obese Class I
25.0 – 29.9
Higher chronic disease risk
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Obese Class II
≥ 30.0
Seek medical guidance
BMI Formula
BMI = weight (kg) ÷ height (m)²
Example: 70 kg ÷ (1.70 m)² = 24.2
Healthy Weight Guide
- Measure height barefoot against a wall
- Weigh yourself in the morning before eating
- Check monthly — track trends, not daily changes
Why BMI Matters for Your Health
Body Mass Index is the first step doctors use to assess weight-related health risks in Indian adults.
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Early Risk Detection
Identify underweight, overweight, or obesity early — before complications like diabetes or heart disease develop.
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India-Specific Guidelines
WHO Asia-Pacific thresholds account for higher metabolic risk in South Asians at lower BMI values.
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Track Your Progress
Monthly BMI checks help you monitor weight trends and measure the impact of lifestyle changes.
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Metabolic Health Marker
BMI correlates with body fat in most adults and links to insulin resistance and cardiovascular risk.
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Ayurvedic Wellness
Combine BMI insights with Nirog Lab's Ayurvedic weight management products for holistic health.
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Private & Secure
All calculations happen in your browser. We never store or transmit your personal health data.
Health Risk Analysis
Understanding how your BMI category relates to common health conditions in India.
Metabolic Risk Level
Based on your BMI category after calculation
Calculate BMI to see your risk level
Associated Conditions
- Type 2 Diabetes — elevated risk above BMI 23 for Indians
- Hypertension — linked to excess body weight
- Cardiovascular disease — higher incidence with obesity
- Fatty liver disease — common in overweight South Asians
- Sleep apnea — risk increases significantly above BMI 25
Ideal Weight
Your Ideal Weight Range
Healthy weight range from this BMI Calculator (BMI 18.5 – 22.9)
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Enter your height in the calculator to see your personalised ideal weight range.
Weight Loss & Wellness Plan
Evidence-based steps tailored to your BMI category for sustainable Indian lifestyle changes.
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Balanced Nutrition
Eat whole grains, dal, vegetables, and lean protein. Reduce refined carbs and sugary drinks common in Indian diets.
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Daily Movement
Aim for 8,000+ steps daily. Add 30 minutes of brisk walking, yoga, or strength training most days.
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Ayurvedic Support
Explore Nirog Lab's weight management formulations to support metabolism alongside lifestyle changes.
Frequently Asked Questions
Common questions about the BMI Calculator, Body Mass Index and healthy weight.
What is BMI?
BMI (Body Mass Index) is a number calculated from your height and weight. It helps estimate whether your weight falls in a healthy range for your height and is widely used as a first screening tool for weight-related health risks.
What is a healthy BMI for Indians?
For Indian adults, WHO Asia-Pacific guidelines recommend a normal BMI of 18.5 to 22.9. A BMI of 23 or above is considered overweight, and 25 or above is obese — with lower thresholds than Western standards due to higher metabolic risk in South Asians.
How often should I check my BMI?
Most adults should check BMI once a month. Avoid daily checks because weight fluctuates naturally. Track trends over weeks and months rather than day-to-day changes for meaningful wellness decisions.
Is BMI accurate?
BMI is a useful population-level screening tool but does not directly measure body fat, muscle mass or fat distribution. It works well for most adults but should be combined with waist circumference and clinical assessment for a complete picture.
Can athletes have misleading BMI results?
Yes. Athletes and people with high muscle mass may have a high BMI despite low body fat. In such cases, body fat percentage, waist-to-hip ratio or a DEXA scan gives a more accurate assessment than BMI alone.
How can I improve my BMI?
Improve BMI through balanced nutrition, regular physical activity (30+ minutes daily), adequate sleep, stress management and consistent habits. Consult a doctor or nutritionist for a personalised plan, especially if BMI is outside the healthy range.
Health & Wellness Resources
Expert articles on weight management, Ayurveda, and nutrition for Indian lifestyles.
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Ayurveda
Natural Weight Management Tips
Ayurvedic approaches to healthy weight for Indian body types.
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Nutrition
Indian Diet for Healthy BMI
Balanced meal plans using familiar Indian foods and spices.
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Products
Weight Management Products
Explore Nirog Lab's Ayurvedic formulations for your goals.
Next step
Start Your Wellness Journey Today
See your BMI first, then explore simple nutrition and Ayurvedic support from Nirog Lab.
Medical Disclaimer
This BMI calculator is for general information only. It is not a medical diagnosis or treatment. BMI does not measure body fat directly. Talk to a qualified doctor before you change your diet, exercise or medicines. Last reviewed October 2026 · WHO Asia-Pacific guidelines.