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Sister Size

A 32C is also a 34B and a 30D. One band up with one cup down, or one band down with one cup up. Same cup volume on the chart — not a fit guarantee.

Frequently asked questions

Does the cup volume stay the same?

That is the idea on the chart. It is not a fitting room or a fit guarantee — shape and brand charts still change how it feels.

How big is one band step?

Two inches on a US or UK label, five on an EU label, and two on an AU label. The cup moves one letter the other way.

Is my data sent to a server?

No. This calculator runs entirely in your browser. Nothing you type is uploaded or stored by Qivtools.