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Waist to Height Ratio Calculator

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Waist to height ratio is one of the simplest screening measures for central fat, and many researchers argue it predicts health risk better than body mass index. The rule of thumb is to keep your waist circumference less than half your height, which corresponds to a ratio below 0.50. This calculator divides your waist by your height and reports the ratio with a plain language category, using common bands where below 0.40 may be low, 0.40 to 0.49 is healthy, and 0.50 and above suggests increased risk. Enter both numbers in the same unit, since the ratio cancels units out. Everything is computed locally in your browser and nothing leaves your device. This is a general information screen, not a medical diagnosis, so use it as a prompt for conversation and see a qualified professional for a full assessment.

How to use Waist to Height Ratio Calculator

  1. Enter your waist measurement.
  2. Enter your height in the same units.
  3. Read your ratio against the healthy range guideline.

Frequently asked questions

How is this ratio worked out?

It divides your waist measurement by your height, using the same units for both.

What is the healthy guideline?

A common guideline is to keep your waist under half your height, so a ratio below 0.5 is generally considered healthy.

Why use waist to height instead of BMI?

This ratio focuses on central fat around the abdomen, which many find a better marker of risk than weight alone.

What is Waist to Height Ratio Calculator?

Waist to height ratio is one of the simplest screening measures for central fat, and many researchers argue it predicts health risk better than body mass index. The rule of thumb is to keep your waist circumference less than half your height, which corresponds to a ratio below 0.

Is Waist to Height Ratio Calculator free to use?

Yes. Waist to Height Ratio Calculator is completely free, with no sign-up and no usage limits.

Does Waist to Height Ratio Calculator work in a web browser?

Yes. Waist to Height Ratio Calculator runs in any modern web browser. There is nothing to download or install.

Is my data private with Waist to Height Ratio Calculator?

Yes. Waist to Height Ratio Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.