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CalcivoTools

BMI Calculator : Body Mass Index for Adults

The Calcivo BMI Calculator is an established screening tool that evaluates whether your weight is proportional to your height using official World Health Organization (WHO) benchmarks.

Interactive Calculator

100% Client-Side Engine
cm
kg
Body Mass Index (BMI)
22.9Normal weight
Underweight (<18.5)Normal (18.5-24.9)Overweight (25-29.9)Obese (≥30)
Healthy Weight Span
56.7 - 76.3 kg
BMI Prime
0.91 (<1.0 is healthy)
Ponderal Index
13.06 kg/m³

Step-by-Step Examples

Metric Height 175 cm and 70 kg Weight

Adult male or female assessing BMI.

Inputs: Height: 175 cm (1.75 m), Weight: 70 kg
Result: BMI: 22.9 (Normal Weight)

70 / (1.75 * 1.75) = 70 / 3.0625 = 22.86 (Healthy range is 18.5 - 24.9).

How to Use This Tool

  1. Choose your unit system (Metric: cm/kg or Imperial: feet/inches/lbs).
  2. Enter your height and weight.
  3. Click Calculate to see your BMI score, classification, and healthy weight span.

Frequently Asked Questions

Underweight: < 18.5; Normal weight: 18.5–24.9; Overweight: 25.0–29.9; Obesity Class I: 30.0–34.9; Obesity Class II: 35.0–39.9; Obesity Class III: ≥ 40.0.

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