Finance & Health Calculator
Free BMI calculator with metric and imperial units. Find your BMI category, healthy weight range, and get personalized health advice based on clinical guidelines.
How It Works
BMI = Weight (kg) / Height (m)²BMI is calculated by dividing your weight in kilograms by the square of your height in meters. A BMI of 18.5-24.9 is considered normal weight. BMI is a screening tool, not a diagnostic — it doesn't account for muscle mass, bone density, or body composition.
Quick Tips
Normal BMI
18.5 to 24.9 is the healthy range. Below 18.5 is underweight; 25-29.9 is overweight; 30+ is obese.
Muscle Mass
BMI doesn't distinguish fat from muscle. Athletes may have a "high BMI" despite low body fat.
Asian Risk
Health risks for Asian populations start at BMI 23 (not 25). WHO recommends lower thresholds for South Asians.
Waist Circumference
For Indian adults: waist >90cm (men) or >80cm (women) indicates higher metabolic risk regardless of BMI.
Step-by-Step Instructions
- 1Choose metric (kg/cm) or imperial (lbs/inches) units.
- 2Enter your weight and height.
- 3View your BMI, category, and healthy weight range.
- 4Read the personalized health advice for your category.
Frequently Asked Questions
What is a healthy BMI?▼
A BMI between 18.5 and 24.9 is considered healthy for the general population. However, for South Asian adults, health risks increase at BMI 23+, so a lower threshold may apply.
Is BMI accurate for athletes?▼
No. BMI doesn't distinguish between muscle and fat. A muscular athlete may have a BMI in the "overweight" range despite having low body fat. Use body fat percentage for a more accurate assessment.
What BMI is considered obese?▼
BMI 30+ is classified as obese. BMI 25-29.9 is overweight. For South Asians, the risk threshold is lower — BMI 27.5+ may be considered obese.
How much should I weigh for my height?▼
Use our calculator to find your healthy weight range. For example, at 170cm, the healthy range is approximately 53.5-72 kg (BMI 18.5-24.9).