Tools

Tools for exploring the data

Calculators, a ZIP code lookup, comparisons and interactive charts, all built on the same public data as the rest of the site.

Calculators

Check your own numbers

Both calculators run entirely in your browser: nothing you type is sent or stored. Each page explains how to measure, what the result means and where its limits are.

Waist-to-height ratioDivide your waist by your height and see which NICE band the result falls in. Adds BMI if you enter your weight.BMI and obesity classWork out a BMI in metric or US units, and see whether it falls in obesity class 1, 2 or 3 — with a weight chart by height.

US data

Look up the United States

Obesity by ZIP code or countyCDC’s 2023 estimates for 2,956 counties and 29,983 ZIP code areas, in one search box.Reported vs measuredEach state’s self-reported obesity rate next to the range a measured survey would likely find.

Explore

Interactive explorers

Compare two countriesPut any two countries side by side on every measure we track.World map time machinePress play and watch the map change from 1980 to today. Switch between a flat map and a 3D globe.Country finderSearch, sort and filter all 200 countries.Wealth vs obesityA bubble chart of income and obesity for every country, year by year.US state raceWatch the states race each other, year by year.