What is a healthy BMI range?

A healthy BMI range is typically 18.5 to 24.9 for adults.

How often should I check my BMI?

For most adults, checking BMI 2-4 times per year is sufficient.

Is BMI accurate for athletes?

BMI may not be accurate for athletes due to increased muscle mass.

What are the limitations of BMI?

BMI doesn't distinguish between fat and muscle mass or account for body fat distribution.

⚖️ BMI Calculator

Free online BMI calculator. Enter your height and weight to get an accurate Body Mass Index, classification, normal BMI ranges, Asian BMI option, formula, chart, and examples.

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All BMI Calculators

BMI Calculator for Women | Female Body Mass Index Tool

Accurate BMI calculator for women. Enter your height and weight to get your BMI, classification, women-specific healthy ranges, chart, formula, and examples.

BMI Calculator for Men | Male Body Mass Index Tool

Free BMI calculator for men. Check your BMI, healthy ranges for men, muscle-mass considerations, chart, and classification.

Child & Teen BMI Calculator | CDC Percentile Growth Chart

Child and teen BMI calculator using CDC percentiles. Enter age, sex, height, and weight to get BMI, percentile, and classification.

BMI Calculator UK (NHS) | Official BMI Ranges & Healthy Weight Guide

UK & NHS-based BMI calculator. Uses official NHS BMI ranges with clear classification, chart, formula, and healthy weight guidance.

BMI Calculator Canada | Adult Body Mass Index Tool

Canada-based BMI calculator using Health Canada guidelines. Enter height and weight to get BMI, classification, healthy ranges, chart, and examples.

BMI Calculator Australia | Body Mass Index Tool (Metric)

Australia-focused BMI calculator. Enter height and weight to get your BMI, classification, healthy range, chart, and guidance.

Frequently Asked Questions about BMI

Find answers to common questions about Body Mass Index.

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BMI Calculator for Women

Accurate BMI calculator for women. Enter your height and weight to get your BMI, classification, women-specific healthy ranges, chart, formula, and examples.

Try it now

⚖️

BMI Calculator for Men

Free BMI calculator for men. Check your BMI, healthy ranges for men, muscle-mass considerations, chart, and classification.

Try it now

⚖️

Child & Teen BMI Calculator

Child and teen BMI calculator using CDC percentiles. Enter age, sex, height, and weight to get BMI, percentile, and classification.

Try it now

Last updated: 2025-10-21 — Compiled and reviewed by Calvin (Health Research, FreeCalculators.app)