How accurate is this BMI calculator for adults?
The BMI calculator for adults uses the same formula as many health pages and charts. It gives a general idea of your BMI range, but it cannot show body fat, muscle, or health risk on its own.
BMI Calculator for Adults
This free BMI calculator lets you switch between metric, US, and other units. Add your age, gender, height, and weight to see your body mass index and a simple category.
Search users often need a quick BMI calculator for adults that works with centimeters, kilograms, feet, inches, and pounds. You can use this page on desktop or mobile without any signup.
This BMI calculator is a general tool and does not replace a personal check from a doctor or dietitian.
How this BMI calculator for adults works
The BMI calculator for adults uses the standard body mass index formula to compare your weight and height. For metric values it divides weight in kilograms by height in meters squared.
The US option in this BMI calculator uses feet, inches, and pounds with the 703 factor. The result matches the BMI number that many health sites and clinics show on their charts.
When to use a BMI calculator
Many people use a BMI calculator online when they start a new fitness plan or want to track weight loss. It gives a simple way to see whether your current weight sits in an underweight, normal, overweight, or obese range.
Because BMI does not measure muscle, bone, or waist size, this BMI calculator for women and men is only one signal. Use it with other checks such as waist measurement, blood tests, and medical advice.
Frequently Asked Questions
What is a healthy BMI range?
Many charts show a BMI between 18.5 and 24.9 as a normal or healthy range for adults. Use this online BMI calculator to see where you sit, then speak with your doctor for a full review.
Does this BMI calculator work for women and men?
Yes, this BMI calculator for women and men uses the same math for all adults. Some guidelines change by sex, age, and ethnicity, so always combine the result with professional advice.
Can athletes rely on BMI calculator results?
People with high muscle mass often get a higher BMI label from any BMI calculator. In these cases, body fat percentage, waist measurement, and sports medical checks give more useful detail than BMI alone.