---
title: "BMI Calculator | Modern Stamina"
description: "Free, simple BMI Calculator. Quickly calculate your Body Mass Index using metric or imperial units to get a baseline for your fitness journey."
url: "https://www.modernstamina.com/calculators/bmi"
language: "en"
---

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# BMI Calculator

Calculate your Body Mass Index to get an estimated baseline of your weight category.

Imperial \(lbs/in\) Metric \(kg/cm\)

Height \(feet\)

Height \(inches\)

Weight \(lbs\)

Height \(cm\)

Weight \(kg\)

Calculate BMI

Your Estimated Result

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## Understanding Your Estimated Result

### What this result means

This number provides an estimated classification of your weight category based on your height.

### Formula used

Body Mass Index \(BMI\) is calculated using the standard formula: weight in kilograms divided by height in meters squared \(kg/m2\).

### Limitations of this calculation

BMI is a general screening measure. It does not assess muscle mass, body-fat distribution, fitness level, health status, or individual body composition. It may categorize athletes as overweight or underestimate body fat in older adults.

### Who may benefit from professional guidance

These estimates are not exact personalised prescriptions. If you are managing a health condition, recovering from an eating disorder, or seeking tailored advice, speak with a qualified healthcare professional or a registered dietitian.

### Related educational guides

  * [Movement: Build your foundation](/move)
  * [Nutrition: Fuel for daily energy](/eat)

Last reviewed: August 2026