About UK Bra Calculator
The UK's free, accurate bra size calculator — helping women find their perfect fit since 2024.
Our Mission
Studies show that up to 80% of UK women wear the wrong bra size. ukbracalculator.co.uk was created to solve this problem — offering a free, accurate, and easy-to-use UK bra calculator that anyone can use at home in under 2 minutes.
Built for the UK Market
Our calculator uses UK standard bra sizing, with band sizes in inches (28–46) and UK cup letters (AA, A, B, C, D, DD, E, F, FF, G, GG, H, HH, J, JJ, K). We also include converters for US, EU, Australian, and French sizing for international shoppers.
Smart Sizing Results
Our bra size calculator uses intelligent logic to provide not just your primary size, but also sister sizes, personalised fitting tips based on your measurements, and guidance for sports bras and maternity bras.
What We Offer
Privacy First
All measurements are processed in your browser. We never store your personal measurements. See our Privacy Policy for full details.
Get in Touch
Have feedback, suggestions, or a business enquiry? We'd love to hear from you.
Contact Us