Terms of use

Updated 24 September 2026. These terms describe use of information and tools on gcupbrasize.com.

Educational sizing guidance

Our tools estimate starting sizes, translate supported chart labels and organise fit observations. They do not guarantee the fit, comfort or support of a garment. Cup letters are not measurements of health, attractiveness or breast weight.

This is not medical advice, a diagnosis or a substitute for an in-person fitting. A calculator cannot account for every difference in tissue, shape, posture, construction or manufacturing. If a garment hurts, stop using it rather than treating its label as proof that it should fit.

Check the method before using a result

Select the correct units and system, use repeatable measurements and review the limits. The calculation methodology and chart boundaries explain each result. A converted label does not guarantee identical patterns or grading between brands.

Before buying, confirm the seller's sizing system, product details, price and returns conditions. We do not process bra orders, payments, exchanges or refunds. Construction guides are not verified stock lists or personal product reviews.

Content and responsible use

You may use the tools for your sizing questions and share links to relevant guides. Do not disrupt the service, submit malicious content, impersonate another person or present estimates as certified fitting or clinical results.

Site text, illustrations and software may be subject to intellectual-property rights. Brief attributed quotations and uses permitted by applicable law are unaffected. Contact us before republishing substantial portions or presenting our material as your own.

Availability and corrections

We may update calculation rules, improve explanations or remove inaccurate pages. Service may be interrupted. We cannot promise that every chart remains current or every calculation is free of error. Report issues through the content and calculation correction form.

These terms do not remove rights or protections that cannot lawfully be excluded. We do not set a contractual liability cap or claim local consumer protections are waived.

Related policies

Read the privacy notice for data handling, the editorial standards for authorship and evidence, and About G Cup Bra Guide for our purpose. Questions can be sent through the contact page.