Last Updated on February 27, 2026 | 4 : 44 pm by Anas Brittany
Understanding your Body Mass Index (BMI) is one of the simplest ways to assess whether your weight falls within a healthy range. Our free BMI calculator helps you instantly calculate your Body Mass Index using your height and weight.
In just seconds, you can determine whether you are underweight, normal weight, overweight, or obese based on internationally recognized BMI categories.
Use our free BMI calculator to quickly calculate your Body Mass Index (BMI). Enter your height and weight to see whether you fall within a healthy BMI range based on standard U.S. health guidelines.
BMI Calculator
What Is BMI?
Body Mass Index (BMI) is a measurement that compares your weight to your height to estimate body fat levels. It is widely used by doctors and health professionals to screen for weight-related health risks.
BMI is calculated using the formula:
BMI = weight (kg) ÷ height (m²)
Although BMI does not directly measure body fat, it provides a reliable indicator of whether your weight may increase your risk for certain health conditions.
BMI Categories Explained
Once you calculate your BMI, your result will fall into one of these categories:
- Underweight: BMI below 18.5
- Normal weight: BMI between 18.5 and 24.9
- Overweight: BMI between 25 and 29.9
- Obesity: BMI 30 or higher
Maintaining a healthy BMI can reduce the risk of heart disease, type 2 diabetes, high blood pressure, and other chronic conditions.
Brittany Anas is a freelance lifestyle journalist and editorial writer with experience covering culture, food, lifestyle, entertainment, and evergreen guides for digital publications. Her writing focuses on clear research, approachable storytelling, and practical ideas designed for everyday readers.
On Fiestasline, Brittany contributes editorial content across lifestyle, ideas, food & drink, culture, and curated guides, helping readers discover inspiration that’s timely, accessible, and easy to enjoy.
