Wellness estimates

BMI Calculator

Calculate body mass index from height and weight with category guidance. Use this Health estimates tool to enter your numbers, review the result, and understand the key assumptions before making the next decision.

What you get
A focused calculator, clear explanation, common questions, and useful next tools.
Quick intro
Calculator
Result
Explanation
Common questions
Related tools

Calculator tool

How this calculator works
The result depends on the numbers you enter and the assumptions shown below.

The explanation defines BMI, shows category bands, and explains limitations.

Review the inputs carefully and treat the output as an estimate. For decisions involving money, taxes, health, law, or security, compare the result with trusted professional guidance when needed.

Frequently asked questions

Is BMI accurate for athletes?

BMI can be less useful for people with high muscle mass and should be interpreted carefully.

Does BMI diagnose health?

No. It is a screening metric, not a diagnosis.