Shape Standard
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An independent measurement reference

Shape Standard publishes one calculator, one method page and a small reference library. The goal is narrow: make a body-shape result reproducible and show the arithmetic behind it.

Published by Shape Standard · Last updated 2026-10-22 · [email protected]

femalebodyshapecalculator.com turns four measurements — bust, waist, high hip and hip — into a published FFIT body-shape result and shows the exact rule that produced it.

What this site is

Shape Standard is an independent editorial project. It is not a clinic, a clothing brand, a styling service or a branch of a university. The site exists because most body-shape calculators give a label without showing the rule, the formula version or the measurement error that could change the answer.

The calculator uses the FFIT formulas published by Simmons, Istook and Devarajan (2004), Lee, Istook, Nam and Park (2007), and the 2020 revision by Sokolowski and Bettencourt. The method page lists every threshold and the source paper. The distribution figures come from the 2003 SizeUSA study as summarised by Istook and Newcomb.

How the calculator is checked

  • Rules are data, not prose. The thresholds live in one module; the method page and the calculator render from the same set.
  • Boundary cases are tested. The test suite covers the published worked cases, the exact thresholds, centimetre-to-inch conversion and the 2007 vs 2020 disagreement.
  • The build is checked before deploy. Every page is checked for a single H1, a self-referential canonical, valid JSON-LD, matching FAQ text, working internal links and AI-crawler access.
  • Claims are traceable. The fact list is kept in the repository; numbers without a source are removed rather than rounded into shape.

What we deliberately do not do

  • We do not rank body shapes, call one “ideal” or score attractiveness.
  • We do not diagnose health conditions or promise weight loss, correction or “flattering” results.
  • We do not name celebrities as examples of a shape; a public figure’s body is not a measurement source.
  • We do not sell placements, supplements or clothing. There are no sponsored results on this site.
  • We do not run a Kibbe test or a somatotype quiz; those are different systems, explained in the labels guide.

Corrections

If a formula, a source or a sentence is wrong, email [email protected] with the page and the correction. We aim to reply within seven days. Formula or source corrections are logged on the method page with the date; wording changes that do not affect the result are made without a version bump.

Independence

Shape Standard is not affiliated with North Carolina State University, the authors of the FFIT papers, David Kibbe, or any clothing brand. The names of those people and institutions are used to describe the published methods, not to imply endorsement.

Contact

Email: [email protected]
Site: femalebodyshapecalculator.com

Sources used on this site

  1. Simmons, Istook & Devarajan (2004). Simmons, K., Istook, C. L., & Devarajan, P. (2004). Female Figure Identification Technique (FFIT) for Apparel. Journal of Textile and Apparel, Technology and Management, 4(1). https://www.ergo-eg.com/uploads/books/devarajan_full_106_04%20(3).pdf
  2. Lee, Istook, Nam & Park (2007). Lee, J. Y., Istook, C. L., Nam, Y. J., & Park, S. M. (2007). Comparison of body shape between USA and Korean women. International Journal of Clothing Science and Technology, 19(5), 374–391.
  3. Sokolowski & Bettencourt (2020). Sokolowski, S. L., & Bettencourt, C. (2020). Modification of the Female Figure Identification Technique (FFIT) Formulas to Include Plus Size Bodies. Proceedings of 3DBODY.TECH 2020. DOI 10.15221/20.22. https://doi.org/10.15221/20.22
  4. Parker, Hayes, Brownbridge & Gill (2021). Parker, C. J., Hayes, S. G., Brownbridge, K., & Gill, S. (2021). Assessing the female figure identification technique’s reliability as a body shape classification system. Ergonomics, 64(8), 1035–1051. DOI 10.1080/00140139.2021.1902572. https://doi.org/10.1080/00140139.2021.1902572
  5. Istook / SizeUSA distribution (2005). North Carolina State University (2005). Fashion designers ignoring shapes of women’s bodies. Newswise / NC State news release; Newcomb, B., & Istook, C. (2006). Using SizeUSA to improve apparel fit. https://www.newswise.com/articles/fashion-designers-ignoring-shapes-of-womens-bodies
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