HEALTH CALCULATOR

BMI Calculator – Body Mass Index & Healthy Weight Range

Calculate your BMI and understand your body mass index category based on height and weight.

Calculator

Your body weight

Choose kilograms (kg) or pounds (lb)

Your height in centimeters (if using cm) or total inches (if using ft+in)

Choose centimeters (cm) or feet and inches (ft+in)

Optional: Used for informational purposes only (BMI calculation is the same for all genders)

Optional: Used for informational purposes only

How to Calculate

  • 1Enter your weight in the weight field
  • 2Select your weight unit (kilograms or pounds)
  • 3Enter your height
  • 4Select your height unit (centimeters or feet+inches)
  • 5If using feet+inches, enter both feet and inches separately
  • 6Optionally enter your gender and age (these are for informational purposes only)
  • 7Click 'Calculate' to see your BMI and category
  • 8Review the category description and healthy weight range for your height
  • 9Read the insights to understand what your BMI means

Calculation Examples

Example 1: Normal Weight (Metric)

Input Values

Weight: 70
Weight Unit: kg
Height: 175
Height Unit: cm

Calculation Steps

  1. Weight: 70 kg
  2. Height: 175 cm = 1.75 meters
  3. BMI formula: BMI = weight (kg) / height (m)²
  4. BMI = 70 / (1.75)²
  5. BMI = 70 / 3.0625
  6. BMI = 22.9
  7. Category: Normal (BMI 18.5-24.9)
  8. This BMI falls within the healthy weight range

Calculated Results

Calculation not available. Showing fallback result below.

Expected Result

A BMI of 22.9 indicates a normal, healthy weight. This person is within the recommended weight range for their height. The healthy weight range for someone 175 cm tall is approximately 57-76 kg.

Example 2: Overweight (Metric)

Input Values

Weight: 90
Weight Unit: kg
Height: 180
Height Unit: cm

Calculation Steps

  1. Weight: 90 kg
  2. Height: 180 cm = 1.80 meters
  3. BMI formula: BMI = weight (kg) / height (m)²
  4. BMI = 90 / (1.80)²
  5. BMI = 90 / 3.24
  6. BMI = 27.8
  7. Category: Overweight (BMI 25-29.9)
  8. This BMI indicates the person may be overweight

Calculated Results

Calculation not available. Showing fallback result below.

Expected Result

A BMI of 27.8 falls into the overweight category. While this is above the normal range, it's important to remember that BMI is a screening tool and doesn't account for muscle mass. For someone 180 cm tall, a healthy weight range is approximately 60-81 kg. Consider consulting with a healthcare provider for personalized guidance.

Example 3: Imperial Units (Pounds and Feet+Inches)

Input Values

Weight: 150
Weight Unit: lb
Height: 70
Height Unit: ft+in
Feet: 5ft
Inches: 10in

Calculation Steps

  1. Weight: 150 lb
  2. Convert to kg: 150 lb × 0.453592 = 68.04 kg
  3. Height: 5 ft 10 in
  4. Convert to meters: (5 × 0.3048) + (10 × 0.0254) = 1.524 + 0.254 = 1.778 meters
  5. BMI formula: BMI = weight (kg) / height (m)²
  6. BMI = 68.04 / (1.778)²
  7. BMI = 68.04 / 3.163
  8. BMI = 21.5
  9. Category: Normal (BMI 18.5-24.9)
  10. This BMI indicates a healthy weight

Calculated Results

Calculation not available. Showing fallback result below.

Expected Result

A BMI of 21.5 falls within the normal, healthy weight range. This demonstrates how the calculator handles unit conversions automatically. For someone 5'10" tall, a healthy weight range is approximately 129-174 pounds.

Example 4: Borderline Category

Input Values

Weight: 77
Weight Unit: kg
Height: 176
Height Unit: cm

Calculation Steps

  1. Weight: 77 kg
  2. Height: 176 cm = 1.76 meters
  3. BMI formula: BMI = weight (kg) / height (m)²
  4. BMI = 77 / (1.76)²
  5. BMI = 77 / 3.0976
  6. BMI = 24.8
  7. Category: Normal (BMI 18.5-24.9)
  8. This BMI is at the upper end of the normal range, close to overweight

Calculated Results

Calculation not available. Showing fallback result below.

Expected Result

A BMI of 24.8 is at the upper limit of the normal range (24.9). While still considered normal, this is close to the overweight category. It's important to maintain a balanced diet and regular physical activity. Remember that BMI categories are guidelines, and individual factors like muscle mass, bone density, and body composition should also be considered.

Frequently Asked Questions

Find answers to common questions about using this calculator. If you have additional questions, feel free to explore the examples above or contact our support team.

Medical Disclaimer

This calculator is for informational and educational purposes only. It is not intended to replace professional medical advice, diagnosis, or treatment. Individual results may vary based on genetics, body composition, medical conditions, medications, and other factors. Always consult with a healthcare provider or registered dietitian before making significant changes to your diet, exercise routine, or health-related decisions.

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