Estimate a common body-shape convention from bust/chest, waist and hip measurements, with transparent ratios and optional schematic illustration.
01 / CIRCUMFERENCES
Explore clothing-shape descriptions with measured circumferences. No gender or ethnicity input is needed; the same rules apply to everyone, although the original clothing research was limited to women.
MEASURE WITH CONFIDENCE
Measure level around the fullest part of the chest. Keep the tape gently against the body.
Measure the narrowest natural waist area; breathe normally and do not pull the tape tight.
Measure the upper swell of the hips, above the fullest hip line. This is a separate circumference, not a fixed distance below the waist.
Measure around the fullest part of the hips and seat. Keep the tape horizontal all the way around.
02 / YOUR MEASUREMENT STORY
Enter measurements to see a description, measurement breakdown and optional shape comparison.
03 / GUIDANCE & RULES
Keep the tape horizontal, stand naturally and do not compress skin. Remeasure near a boundary: small differences can change a label. Circumferences alone cannot describe every body.
Published inch-difference/high-hip-ratio rules associated with Lee, Istook, Nam & Park (2007), “Comparison of body shape between USA and Korean women”, as transcribed in the reference below. This is a clothing convention, not a universally validated classification. The hourglass rule groups the final waist conditions together.
Priority follows this list. Overlapping matches are disclosed. A missing high hip blocks a definitive result if an earlier applicable rule needs it. No match remains unclassified. Differences are converted to inches using exactly 2.54 cm/in; numerical noise is normalized to 9 decimal places before comparison.
Published rules and original study citationOriginal Nimzoa rules: waist ≥ both bust and hips gives rounded/oval; otherwise bust/hips within 5% of the larger are balanced, with waist ≤75% of the smaller giving hourglass and otherwise rectangle. Unbalanced hips larger gives triangle, otherwise inverted triangle.
Software bounds: 20–300 cm per circumference; high hip must not exceed full hip. These are input checks, not anatomical standards. No BMI, health, attractiveness, personality or fitness conclusion is made.
Enter your values locally; no inputs are uploaded.
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Review the explanation, copy supported outputs or reset the workspace.
Enter bust/chest, waist and hip circumferences with units. Calculate, review the approximate shape rules and copy the result or Reset.
Clear assumptions, validated inputs, responsive controls and private browser-local results.
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No. These are approximate descriptive conventions, not diagnoses or validated biological categories. Nearby measurements can fall on different sides of a threshold.
Bust/chest and hips are treated as balanced when their difference is at most 5% of the larger. A waist at most 75% of the smaller defines hourglass within that balanced group; otherwise it is rectangle. Larger hips or chest define triangle or inverted triangle. A waist at least as large as both takes priority as rounded/oval.
Use a flexible tape level around the fullest bust/chest, natural waist and widest hips, without compressing skin. Repeating measurements helps because posture, clothing and tape placement can change results.
Yes. Choose centimeters or inches; one inch is exactly 2.54 cm. The classification is based on ratios, so equivalent measurements give the same result.
No. It does not calculate BMI, body fat, medical risk, fitness, personality or attractiveness. It only describes the stated circumference ratios.