Disclaimer

Last reviewed on 28 April 2026.

General information only

The information published on BraCalc.com is provided for general informational purposes. It is not intended as, and should not be relied upon as, professional fitting advice, medical advice, or advice from any other qualified professional. Always seek the guidance of a qualified person for matters that require their expertise.

Sizing results are estimates

The calculator, sister-size matrix, and international converter on BraCalc produce estimates derived from measurements you provide and from widely-used regional sizing charts. Bra sizing varies between manufacturers and between styles within a single manufacturer. A size that fits well in one brand may not fit well in another, even if both brands use the same size label. The results from BraCalc are a sensible starting point for shopping or troubleshooting, not a guarantee that a specific bra in that size will fit you.

For best results, treat the calculator's output as the first size to try and the sister sizes as the second and third sizes to try. Always try a bra on before relying on it for daily wear, and pay attention to the band, the cup, and the centre piece between the cups (the gore) — all three need to sit correctly for a bra to actually fit.

Not medical advice

BraCalc does not provide medical advice. Some readers come to the Site after surgery, during pregnancy or nursing, after substantial weight change, while undergoing hormone therapy, or in connection with conditions affecting the chest wall or breast tissue. The general guidance on the Site cannot account for any of those situations. Speak with a qualified clinician or a specialist fitter (for example, a fitter affiliated with a post-mastectomy programme or a specialist maternity-and-nursing boutique) for advice tailored to your situation.

If you experience pain, persistent skin irritation, or other symptoms that may relate to a bra, the answer is to stop wearing that bra and seek qualified advice — not to consult an online calculator.

No endorsement

BraCalc is not affiliated with any specific manufacturer, retailer, or fitting service. Where the editorial content mentions a category of brand (for example, "ranges that specialise in fuller-bust fitting"), it does so to help a reader narrow their search; this is not a paid endorsement and does not imply that any particular brand will fit any particular person.

External links

Pages on BraCalc may link to external websites operated by third parties (for example, browser opt-out tools or industry advertising-choice pages referenced in the Cookie Policy). BraCalc has no control over the content or practices of those external sites and is not responsible for them. Following an external link is at your own discretion.

Limitation of liability

To the fullest extent permitted by law, BraCalc and its operators will not be liable for any decision made or action taken on the basis of information found on the Site. See the Terms of Use for the formal limitation-of-liability clause.

Questions

If something on the Site looks wrong, or if a piece of guidance does not match what a qualified fitter has told you, please get in touch via the Contact page. Corrections are taken seriously.