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Waist-to-height ratio calculator

Compute your waist-to-height ratio and see the associated health category.

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Need Waist-to-height ratio, Health category? The Waist-to-height ratio calculator derives it from Waist (cm), Height (cm) in one step. For instance, with Waist (cm) = 80 and Height (cm) = 175 it returns Waist-to-height ratio = 0.457 and Health category = healthy.

How to use it

  1. Enter your values: Waist (cm), Height (cm).
  2. Read the result instantly: Waist-to-height ratio, Health category.

Frequently asked questions

What does the Waist-to-height ratio calculator actually compute?

It takes Waist (cm) and Height (cm) and derives Waist-to-height ratio and Health category from them. The calculation is live as you type, so the result updates on every change.

What information do I need to provide?

2 values: Waist (cm) and Height (cm). Nothing else is required — no account, no file upload.

Can you show a worked example?

With Waist (cm) = 80 and Height (cm) = 175, the calculator returns Waist-to-height ratio = 0.457 and Health category = healthy. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

What happens if I enter larger values?

It moves a lot. Using Waist (cm) = 88 and Height (cm) = 193 instead, Waist-to-height ratio goes from 0.457 to 0.456 — which is why it is worth testing a few scenarios rather than trusting a single figure.

What does it give for smaller values?

Scaled down to Waist (cm) = 72 and Height (cm) = 158, Waist-to-height ratio comes out at 0.456. The relationship is worth checking at both ends before you rely on a single result.

When would I actually use this?

Getting a reference point before a check-up, setting a realistic target, and understanding why two people of the same weight can be in very different shape — and, the same act from the other side, putting a day's caffeine, salt, sugar or alcohol beside the ceiling a health body publishes for it.

What is the most common mistake?

Reading BMI as a measure of health. It cannot tell muscle from fat, which is why athletes routinely score as overweight and why it says little about an individual.

How accurate is it, and what are the limits?

For general guidance only — not medical advice.

What is the difference between the Waist-to-height ratio calculator and the Waist-to-hip ratio calculator?

This one returns Waist-to-height ratio and Health category; the Waist-to-hip ratio calculator returns Waist-to-hip ratio and Against the WHO ratio cut-off. That is the whole difference — open the one whose figure you need.

Is there a tool for the next step?

Adult height predictor is the closest one after this: Predict a child's adult height from the parents' heights.

Further reading

All guides →
ExplainerWhat Is a Healthy Waist-to-Height Ratio?Keeping your waist under half your height is a simple health marker. Learn what waist-to-height ratio means, how to measure, and why under 0.5 is the goal.ExplainerWaist-to-Hip Ratio Explained: The Thresholds, and Where to Put the TapeWHO puts abdominal obesity at a ratio of 0.90 or more for men and 0.85 or more for women. But measuring in the wrong place changes the answer more than the threshold does — here is exactly where the tape goes.ExplainerIs BMI Reliable? The Limitations of Body Mass IndexBMI is a quick screen, not a diagnosis. Learn what it misses — muscle, fat distribution, age — and what to check alongside it.ExplainerWhat Is a Child Growth Percentile?Growth percentiles compare a child's height and weight to others the same age and sex. Here's how to read them and what really matters.ExplainerWhere a Percentile Comes From: Which Population, Measured WhenA percentile is a rank against a reference population, so the first question is never the arithmetic — it is which population, measured when. The same 5'11" man is the 38th percentile in one national dataset and the 86th in another, and the 91st against a reference of people born a century ago. Here is why, and what a z-score adds.ExplainerHow Tall Will a Child Be? The Arithmetic Is Easy; the Error Bar Is the StoryAverage the parents' heights, shift by a sex constant, and you have a target height. The honest part is what comes next: the published prediction interval is about ±4 inches, wide enough to cover most of the adult population. Here is the formula, the interval, why bone age does better, and why children keep out-growing the target.