A tool designed to assist individuals in determining their bra size according to United Kingdom sizing standards, typically referred to as a bust measurement tool, utilizes measurements of the underbust (band size) and overbust (bust size). The difference between these measurements is then used to calculate cup size, conforming to UK sizing conventions where each inch difference corresponds to a specific cup letter (e.g., 1 inch = A, 2 inches = B, and so on). The results are then combined to give a full bra size, such as 34C.
The utility of such a tool lies in its potential to improve the fit and comfort of bras, leading to better support and posture, and potentially reducing back pain. Historically, bra sizing has been inconsistent across brands and regions, creating challenges for consumers. Online tools and guides provide a standardized approach, empowering individuals to find a more accurate bra size and to make informed purchasing decisions, especially when shopping online.