Practical tools for measured work
Adult BMI reference
Calculate adult BMI from measured height and weight, with CDC categories and explicit population limits.
How it works
BMI = weight in kilograms divided by height in metres squared. Adult category boundaries are 18.5, 25, 30, 35 and 40; classification uses the unrounded result.
Before using the result
- Check the selected mode, units and input values before using the result.
- Read the assumptions and rounding rules; compare the worked example with your intended calculation.
- A numerical result does not supply missing context or change the stated limitations.
Limitations
For nonpregnant adults aged 20 and over. BMI is a screening measure, not a diagnosis or a direct measure of body fat. Muscle, age, medical history and other measurements matter. Child growth charts require a different method. Inputs remain in this page and are not put into share links.
Frequently asked questions
What should I verify before using this result?
Check the input values, units, dates and assumptions. Compare the method and its stated limits with the source relevant to your task.
Why might the finished result differ?
Results depend on the entered data and the model’s assumptions. Rounding, changing conditions or omitted factors can affect the comparison. Read the limitations before using the result.
Related tools
Bra measurement and size-chart calculator
Use named Wacoal measurement ranges or convert existing Freya labels across UK, US, EU and French systems.
Dress measurement and editable size-chart guide
Compare bust, waist and hip measurements with a named regular-fit chart or your entered brand table.
Measured belt size and hole positions
Convert a measured wearing length into belt size and leather-fold hole positions with explicit buckle allowance.
Adult body surface area estimate
Estimate adult body surface area with the Mosteller formula. Educational geometry only; no medication dosing.