Home/Medical/BMI Calculator - Body Mass Index with Health Risk Assessment

BMI Calculator - Body Mass Index with Health Risk Assessment

Calculate BMI online free with visual gauge, health risk assessment, and trend tracking. Metric and imperial units supported.

Browser-BasedResponsive UI Privacy-First

Enter Measurements

Your BMI Result

-
BMI
Under
<18.5
Normal
18.5-24.9
Over
25-29.9
Obese
≥30
Classification-
Health Risk-
Ideal Weight Range-
Weight to Target-
BMI Trend
Save your first reading to start tracking
About BMI

Body Mass Index (BMI) is a screening tool that uses height and weight to estimate body fat. It is calculated as weight (kg) divided by height squared (m²).

Limitations: BMI does not directly measure body fat. Athletes with high muscle mass may have a high BMI without excess fat. BMI also does not account for fat distribution, age, or gender differences.

Ideal weight ranges shown use the Devine formula (1974), the standard reference for adult ideal body weight.

Keep exploring

Continue with tools that solve the next part of this task.

All Medical tools
MedicalBMR & TDEE CalculatorOpen toolMedicalCalorie & Nutrition CalculatorOpen toolMedicalHeart Rate CalculatorOpen toolMedicalBlood Pressure TrackerOpen tool

How it works

BMI Calculator guide and FAQ

BMI Calculator is part of the Medical Tools collection on ToolRaven, built for fast, privacy-first browser utility work without signups or setup. Calculate BMI online free with visual gauge, health risk assessment, and trend tracking. Metric and imperial units supported.

ToolRaven processes data locally in your browser whenever possible, keeping your work private, fast, and accessible across mobile, tablet, and desktop screens.