Calculate Your BMI

Your BMI Results

24.2
Normal Weight

Health Risk Assessment

Low Risk

Your weight is within the healthy range. Maintain your current lifestyle for optimal health.

Healthy Weight Range for Your Height

56.7 – 76.6 kg

Based on BMI 18.5 – 24.9

BMI Categories

Underweight
< 18.5
Normal
18.5 – 24.9
Overweight
25 – 29.9
Obese
30+

Understanding Body Mass Index (BMI)

Body Mass Index (BMI) is a simple calculation using a person’s height and weight. The formula is:

BMI Formula

Metric: BMI = weight (kg) ÷ height² (m²)

Imperial: BMI = [weight (lbs) ÷ height² (in²)] × 703

Example: For someone 1.7m tall weighing 70kg: 70 ÷ (1.7 × 1.7) = 24.2

BMI provides a reliable indicator of body fatness for most people and is used to screen for weight categories that may lead to health problems.

BMI Categories and Health Risks

Category BMI Range Health Risk
Underweight < 18.5 Increased risk of nutritional deficiencies, osteoporosis
Normal Weight 18.5 – 24.9 Lowest risk of weight-related health problems
Overweight 25 – 29.9 Increased risk of type 2 diabetes, hypertension
Obese Class I 30 – 34.9 Moderately increased risk of cardiovascular disease
Obese Class II 35 – 39.9 Severely increased health risks
Obese Class III 40+ Extremely high risk of serious health conditions

Age Considerations

BMI interpretation may vary by age. Older adults (65+) may have slightly higher healthy ranges due to age-related muscle loss.

BMI Limitations

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Muscle Mass

BMI doesn’t distinguish between muscle and fat. Athletes with high muscle mass may have high BMI but low body fat.

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Body Composition

BMI doesn’t account for fat distribution. Abdominal fat carries higher health risks than fat elsewhere.

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Age and Gender

BMI ranges may need adjustment for different age groups and genders.

!

Ethnic Differences

Some ethnic groups may have different healthy BMI ranges.

When BMI May Not Be Accurate

  • Professional athletes or bodybuilders
  • Pregnant or breastfeeding women
  • Children and teenagers (use pediatric BMI charts)
  • Adults over 65 years
  • People with physical disabilities

Maintaining a Healthy BMI

1

Balanced Nutrition

Focus on whole foods: fruits, vegetables, lean proteins, whole grains, and healthy fats. Avoid processed foods and sugary drinks.

2

Regular Exercise

Aim for at least 150 minutes of moderate exercise or 75 minutes of vigorous exercise weekly, plus strength training twice a week.

3

Monitor Progress

Check your BMI regularly (monthly), but also track measurements, energy levels, and how clothes fit.

4

Get Enough Sleep

Aim for 7-9 hours of quality sleep per night. Poor sleep affects hormones that regulate appetite and metabolism.

5

Manage Stress

Chronic stress can lead to weight gain through hormonal changes and emotional eating.

6

Stay Hydrated

Drink adequate water throughout the day. Sometimes thirst is mistaken for hunger.