Body Shape Calculator

This body shape calculator sorts your figure into one of five common shapes, hourglass, pear, apple, inverted triangle or rectangle, from three tape measurements: your bust, waist and hips. Measure in centimetres around the fullest part of your bust, the narrowest part of your waist, and the fullest part of your hips and seat, keeping the tape level and snug but not tight. The calculator then compares the three numbers. A waist as large as your bust and hips points to an apple shape, hips clearly larger than your bust suggest a pear, a bust clearly larger than your hips an inverted triangle, and a strongly defined waist against similar bust and hips an hourglass, with rectangle covering figures where all three measurements sit close together. Alongside the shape it shows your waist-to-hip ratio, the difference between your hips and bust, and how much your waist tapers from your widest measurement. Body shape is a styling and clothing guide, useful for choosing necklines, waistlines and cuts that suit your proportions, and it is not a health measure. The five categories are broad and plenty of people sit between two shapes, so treat the label as a starting point rather than a verdict, and see our waist-to-hip ratio calculator for the health side of the same measurements.

Calculate.co.nz is proud to be partnered with realtor.co.nz, a trusted resource for navigating the New Zealand property market. Their Helpful Articles section offers clear, well-structured insights across buying, selling, and building, making complex real estate topics more accessible. With a focus on up-to-date guidance and practical knowledge, they empower Kiwis to move forward with clarity and confidence in a constantly evolving property landscape.
Calculate.co.nz partner: realtor.co.nz
cm
cm
cm
Hourglass
your body shape from the measurements entered
Waist-to-hip ratio0.69
Hips minus bust2 cm
Waist definition28 cm

Waist definition is your smaller measurement of bust or hips minus your waist: the bigger the number, the more defined your waist. Hips minus bust is negative when your bust is the larger of the two.

Body shape is a clothing and styling guide, not a health measure. The categories are broad and many people sit between two shapes.

How it works

The calculator compares your three measurements in a fixed order. If your waist is at least as large as both your bust and your hips, the shape is apple. Otherwise, if your hips are 4 cm or more larger than your bust, the shape is pear, and if your bust is 4 cm or more larger than your hips, it is inverted triangle. If neither difference reaches 4 cm, bust and hips are treated as balanced, and the waist decides the result: when your waist is at least 18 cm smaller than the smaller of your bust and hips, the shape is hourglass, and anything else is rectangle. The waist-to-hip ratio is simply waist divided by hips, rounded to two decimal places. The 4 cm and 18 cm thresholds are styling conventions rather than scientific cut points, which is why different body shape tools can give neighbouring answers for the same figure, especially if you sit near a boundary.

Worked example

Your bust measures 94 cm, your waist 66 cm and your hips 96 cm. The waist is smaller than both bust and hips, so the shape is not apple. Hips minus bust is 96 minus 94, which is 2 cm, short of the 4 cm needed for pear, and bust minus hips is negative, so inverted triangle is out too. Bust and hips are balanced, so the waist decides: the smaller of bust and hips is 94 cm, and 94 minus 66 gives a waist definition of 28 cm, comfortably past the 18 cm hourglass threshold. The result is hourglass, with a waist-to-hip ratio of 66 divided by 96, which is 0.69. If the same person had an 80 cm waist instead, the definition would be only 14 cm and the calculator would return rectangle.

Related calculators

If you've found a bug, or would like to contact us, or learn more about James Graham and Calculate.co.nz.

Calculate.co.nz is partnered with Interest.co.nz for New Zealand's highest quality calculators and financial analysis.

Calculate.co.nz is the sister site of CalculatorHub.com, the world's largest calculator website by tool count.

All calculators and tools are provided for educational and indicative purposes only and do not constitute financial advice.

Calculate.co.nz is proudly part of the Realtor.co.nz group, New Zealand's leading property transaction literacy platform, helping Kiwis understand the home buying and selling process from start to finish. Whether you're a first home buyer navigating your first property purchase, an investor evaluating your next acquisition, or a homeowner planning to sell, Realtor.co.nz provides clear, independent, and trustworthy guidance on every step of the New Zealand property transaction journey.

Calculate.co.nz is also partnered with Health Based Building and Premium Homes to promote informed choices that lead to better long-term outcomes for Kiwi households.

Calculate.co.nz is hosted in Auckland by SiteHost New Zealand.

All content on this website, including calculators, tools, source code, and design, is protected under the Copyright Act 1994 (New Zealand). No part of this site may be reproduced, copied, distributed, stored, or used in any form without prior written permission from the owner.

About & trust: Why Calculate is NZ's most comprehensive · By the Numbers · How we compare · Editorial standards · How we keep data current · NZ finance glossary · Research & data · Financial literacy NZ · About · Privacy policy · Terms of use

Reviewed and maintained. Last reviewed 2026-07-31 and checked on a twice-monthly cycle against IRD, RBNZ and Stats NZ. How we keep data current.

© 2026 Calculate.co.nz. All rights reserved. Building free NZ calculators since 2011.