Double-checking a health check report
Recompute the BMI from height and weight and compare it with the reference range printed on the report.
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Guide
BMI Calculator computes the body mass index as weight(kg) ÷ height(m)² and classifies it against the WHO thresholds: underweight below 18.5, normal 18.5–24.9, overweight 25–29.9 and obese from 30. It also derives the healthy weight range for the entered height from the same standard (BMI 18.5 to 24.9), rounded to one decimal place, and shows where the current BMI sits on the scale.
Updated 2026-10-092 min read
| Input | Output | Notes |
|---|---|---|
| 170 cm / 65 kg | BMI ≈ 22.5, normal | Sits in the middle of the WHO normal band |
| 175 cm / 76 kg | BMI ≈ 24.8 | Still normal under WHO, close to the overweight threshold |
Recompute the BMI from height and weight and compare it with the reference range printed on the report.
Read the upper and lower weight limits of the healthy range for your height directly, without converting values yourself.
The WHO cut-offs: underweight below 18.5, normal 18.5–24.9, overweight 25–29.9 and obese from 30. The scale under the result marks the same boundaries.
Not necessarily. BMI uses only height and weight and cannot separate muscle from fat, so other measures should be taken into account.
Height and weight are computed in the browser only; nothing is saved or uploaded.
Updated 2026-10-09
BMI from height and weight, classified by the WHO standard with the healthy weight range
BMI = weight (kg) ÷ height (m)²
By the WHO standard, your healthy weight range is 53.5 ~ 72.0 kg
| Category | WHO standard |
|---|---|
| Underweight | < 18.5 |
| Normal | 18.5 ~ 24.9 ← |
| Overweight | 25 ~ 29.9 |
| Obese | ≥ 30 |
BMI is a rough weight estimate. It does not apply to pregnant women, athletes, older adults or minors — consult a doctor about your actual health.