Waist to Hip Ratio Calculator Formula

Q: What is a healthy waist-to-hip ratio?

For men, below 0.90 is low risk. For women, below 0.80 is low risk. Higher ratios indicate more abdominal fat and increased health risk.

Q: How do I measure my waist and hips?

Measure your waist at the narrowest point (usually at the navel). Measure your hips at the widest point of your buttocks.

Understand the math behind the waist to hip ratio calculator. Each variable explained with a worked example.

Use the Waist to Hip Ratio Calculator

Formulas Used

Waist-to-Hip Ratio

whr = waist / hip

Variables

Variable	Description	Default
`waist`	Waist Circumference(inches)	34
`hip`	Hip Circumference(inches)	40

How It Works

Waist-to-Hip Ratio

WHR = Waist Circumference / Hip Circumference

Health Risk Categories

GenderLow RiskModerate RiskHigh Risk Male< 0.900.90 - 0.991.0+ Female< 0.800.80 - 0.840.85+

WHR is considered a better predictor of cardiovascular risk than BMI alone.

Worked Example

A person with a 34-inch waist and 40-inch hips.

waist = 34hip = 40

01WHR = 34 / 40 = 0.850

Frequently Asked Questions

What is a healthy waist-to-hip ratio?

For men, below 0.90 is low risk. For women, below 0.80 is low risk. Higher ratios indicate more abdominal fat and increased health risk.

How do I measure my waist and hips?

Measure your waist at the narrowest point (usually at the navel). Measure your hips at the widest point of your buttocks.

Learn More

Guide

Understanding BMI: What It Means and How to Calculate It

Learn what BMI is, how to calculate it, what the ranges mean, and the limitations of body mass index as a health metric. Comprehensive guide with formulas and context.

Ready to run the numbers?

Open Waist to Hip Ratio Calculator