Waist-to-hip & waist-to-height calculator

Waist-to-hip ratio (WHR) and waist-to-height ratio (WHtR) summarize how waist size compares with hips and stature. They are simple tape-measure tools used in public-health education—not a full cardiometabolic workup. This free calculator reports both ratios with Low / Moderate / High educational bands.

How to measure for useful ratios

Measure waist at the midpoint between the lowest rib and the iliac crest (or at the navel if that is your consistent landmark), hips at the widest point of the buttocks, and height without shoes. Use the same unit—centimeters or inches—for all three inputs so the ratios stay unitless and correct.

WHR = waist ÷ hip. WHtR = waist ÷ height. A soft tape beats guessing from clothing size. Measure at the same time of day, after a normal breath, not after a huge meal or a dehydrating workout if you can help it.

Educational cutoffs—not a diagnosis

WHO-style summaries often associate higher risk with WHR above about 0.90 in men and 0.85 in women. Many articles cite WHtR at or above 0.5 as elevated. FreeNutri maps those ideas into Low / Moderate / High labels for orientation. Individual risk depends on age, smoking, lipids, blood pressure, family history, and more—this page cannot see any of that.

Athletes with large glutes may show a favorable WHR while still carrying visceral fat; others may have a high WHR from waist alone. Pair ratios with BMI, body-fat estimates, and how you feel day to day.

What to do with the result

If bands read High, focus on sustainable habits: daily steps, strength training, sleep, and a calorie target from the TDEE calculator—not crash diets. Waist often responds earlier than scale weight when you lose visceral fat.

Recheck monthly. Tape error of a centimeter can nudge a ratio across a band. Track the raw waist centimeters too; sometimes the absolute waist trend is clearer than the ratio alone.

Limits of shape ratios

Pregnancy, ascites, recent surgery, and some endocrine conditions change waist meaning. Children and teens need pediatric references—not these adult educational bands. Seek clinical care for unexplained weight change, edema, or metabolic symptoms.

FreeNutri provides the calculator free without signup so you can check ratios in seconds, then return to meal planning. Educational only—not medical advice.

Related body tools

Use BMI for weight-for-height, the Navy body-fat estimator for a composition sketch, and FFMI when you care about lean mass relative to height. Together they paint a broader picture than any single number.

Consistency beats perfection: same landmarks, same tape, same time of day. That is how ratios become useful trend tools instead of anxiety machines.