π Waist to Hip Ratio Calculator
Divide waist by hip and check your risk category with WHO cutoffs.
Waist to Hip Ratio
These are estimates for planning and education only, not medical advice. Talk to a qualified professional before changing your training or health routine.
How to Use This Calculator
Enter your waist and hip measurements, pick your units and gender, and the calculator divides waist by hip and places the result into the WHO risk category for your gender.
Measure your waist at the narrowest point of your torso, usually just above the belly button, at the end of a normal exhale.
Measure your hips at the widest point around your buttocks, keeping the tape level all the way around.
Enter both numbers, choose inches or centimeters (the ratio is the same either way), and select your gender.
Read your WHR and its category: healthy, increased risk, or high risk, plus what the category means for you.
The Formula and WHO Cutoffs
Doctors and researchers care about waist to hip ratio because fat stored around the midsection, called visceral fat, wraps around the liver and other organs and is linked more strongly to heart disease, type 2 diabetes, and high blood pressure than fat stored on the hips and thighs. Two people can share the same BMI and carry very different risk, and WHR is one of the simplest ways to tell them apart. The World Health Organization set the widely used cutoffs: substantially increased health risk begins above 0.90 for men and above 0.85 for women. This calculator uses a three-band version of those cutoffs so you get a healthy range, an increased-risk middle band, and a high-risk band, with gender-specific boundaries.
Worked Example
A woman measures a 30 inch waist and a 40 inch hip. WHR = 30 / 40 = 0.75. That is below 0.80, so it lands in the healthy range for women. If her waist later measured 35 inches at the same hips, her WHR would be 35 / 40 = 0.875, which crosses the 0.85 line into the high-risk band, a clear signal to talk with her doctor even if her weight had barely changed.
What Your Result Means in Practice
A healthy result means your fat distribution is in the lower-risk pattern, but it does not clear you to ignore the basics: blood pressure, cholesterol, and activity still matter. An increased-risk result is the best time to act, because a few inches off the waist through steady fat loss usually pulls the ratio back into the healthy band within a few months. A high-risk result is worth taking to your doctor alongside your other numbers, since risk factors stack: high WHR plus high blood pressure, for example, compounds more than either one alone. Measure every 4 to 6 weeks under the same conditions, morning before eating is the most consistent time, and watch the trend rather than any single reading.
Disclaimer
These are estimates for planning and education only, not medical advice. Talk to a qualified professional before changing your training or health routine.
Frequently Asked Questions
What is a good waist to hip ratio?
A WHR below 0.90 for men and below 0.80 for women falls in the healthy range by WHO guidance. Values of 0.90 to 0.99 for men (0.80 to 0.84 for women) indicate increased health risk, and values at or above 1.0 for men (0.85 for women) indicate substantially increased risk, because fat carried around the waist is linked more closely to heart disease and type 2 diabetes than fat carried elsewhere.
How do I measure my waist and hips correctly?
Stand relaxed and breathe normally. Measure the waist at the narrowest point of your torso, usually just above the belly button, with the tape snug but not digging in. Measure the hips at the widest point around your buttocks. Keep the tape level and record the measurement at the end of a normal exhale. Measure twice and use the average for a more reliable result.
Is WHR better than BMI?
They answer different questions. BMI compares your total weight to your height but cannot tell muscle from fat, so athletes can score as overweight. WHR measures where your fat sits, and fat around the midsection is the pattern most tied to metabolic risk. Used together they give a fuller picture than either one alone.
Can I lower my waist to hip ratio?
Yes, a high WHR usually drops as you lose belly fat through a sustained calorie deficit, regular cardio and strength training, enough sleep, and less alcohol and added sugar. You cannot spot-reduce your waist with crunches, but overall fat loss reliably shrinks the waist faster than the hips. Recheck your measurements every 4 to 6 weeks.
Does WHR work for pregnant women or athletes?
WHR cutoffs are not validated during pregnancy, when waist measurements change naturally, so this tool is not meant for that case. For very muscular people the ratio still works reasonably well because it compares two body circumferences rather than weight, but anyone with an unusual body composition should interpret the result with a professional.