BMI Calculator
Body mass index with WHO category.
Result is factual based on the standard BMI formula; not a medical diagnosis.
Free Online BMI Calculator — Body Mass Index, WHO Categories & Ideal Weight Range
Understanding Body Mass Index (BMI) & Why It Matters for Your Health
Body Mass Index (BMI) is an international statistical metric used by healthcare professionals and the World Health Organization (WHO) to classify body weight relative to height in adults. Calculating your BMI score determines whether you fall into Underweight, Normal (Healthy) Weight, Overweight, or Obese categories, helping you make informed decisions regarding nutrition, fitness, and medical wellness.
- BMI Formula (Metric): Weight (kg) ÷ [Height (m) × Height (m)]
- BMI Formula (Imperial): [Weight (lbs) ÷ Height (inches) ÷ Height (inches)] × 703
- Supports both Metric (cm, kg) and Imperial (feet/inches, lbs) toggles
- Calculates ideal healthy weight range for your exact height
Official World Health Organization (WHO) BMI Category Table
Refer to these standard international BMI classifications for adults aged 20 and older:
- Underweight: BMI less than 18.5 (Kekurangan Berat Badan)
- Normal / Healthy Weight: BMI 18.5 to 24.9 (Berat Badan Ideal / Normal)
- Overweight: BMI 25.0 to 29.9 (Kelebihan Berat Badan)
- Obesity Class I: BMI 30.0 to 34.9 (Obesitas Tingkat 1)
- Obesity Class II & III: BMI 35.0 or greater (Obesitas Berat / Sangat Berat)
💡How to Use
- Enter your input data into the Bmi tool area.
- Configure options or preferences if available.
- Copy or download your clean output instantly.
🎯Common Use Cases
- Daily productivity workflows requiring quick bmi processing.
- Privacy-sensitive environments where data must not be uploaded.
- Mobile and desktop browsing without software installation.
⚡Key Features & Advantages
- 100% client-side execution in local browser memory
- Zero data transmission to cloud servers for privacy
- Free forever with no usage caps or account signups
❓Frequently Asked Questions
What is a healthy BMI for adults?
According to WHO guidelines, a healthy adult BMI score falls between 18.5 and 24.9.
Does BMI apply to athletes and bodybuilders?
BMI may overestimate body fat in muscular athletes because muscle tissue is denser than fat. Athletes should combine BMI with body fat percentage measurements.