What it is
BMI Calculator is a simple yet complete Body Mass Index (BMI) calculator: enter height and weight to instantly get your BMI and category (underweight, normal weight, overweight, obesity). You can also add advanced measurements like waist and hips to estimate indicators linked to cardiometabolic risk (e.g., fat distribution and waist-to-height ratio) or save a history of your measurements to track your progress. A kids/teens mode is included based on WHO references (BMI-for-age), useful to interpret values correctly during growth.
- BMI (Body Mass Index) calculation with category
- Advanced measures: waist/hips and risk indicators
- Local measurement history tracking
How it works
Enter height and weight
Fill in the main data and instantly get your BMI value with a clear classification.
Add advanced measures (optional)
If you enter waist and/or hips, the app calculates extra indicators to better understand your risk profile.
Enable kids mode when needed
For children and teens, use the dedicated mode (WHO, BMI-for-age) for a more correct interpretation than adult standards.
Features
Fast, clear BMI calculator
Instant result with category and simple interpretation: ideal for quick checks and tracking over time.
Advanced indicators beyond BMI
Add waist and (if used) hips to get measures like waist-to-height and waist-to-hip ratios, useful for assessing fat distribution.
Kids and teens mode (WHO)
BMI in growing age is read differently: the dedicated mode uses WHO BMI-for-age references for a more appropriate interpretation.
Convenient units and privacy
Quick input with practical units and immediate use: no registration, data stays under your control while using the app.
FAQ
BMI (Body Mass Index) is a ratio between weight and height that helps classify underweight, normal weight, overweight and obesity. It’s useful, but it doesn’t tell the whole story on its own.
Waist and (if used) waist-to-hip ratio help assess body fat distribution, often more related to cardiometabolic risk than BMI alone.
In children and teens, BMI changes with age and growth: the dedicated mode uses WHO BMI-for-age references to avoid misleading “adult” comparisons.