Bra fitting tools
Free tools for every stage of finding a bra that fits: measuring, understanding your size, fixing fit problems and tracking changes.
Find your size
Bra Size Calculator
Four measurements, both band methods, sister sizes and a confidence score.
No Tape Measure
Get a rough bra size estimate from a bra you already own or your dress size.
Nursing Bra Calculator
Find your bra size through pregnancy and breastfeeding.
Sports Bra Calculator
Find the right size and support type for your activity.
Plus Size Bra Calculator
Find the right size for larger bands and fuller cups.
Strapless Bra Size
Find the firmer band size a strapless bra needs for a secure fit.
Understand your size
Sister Size Calculator
Every size with the same cup volume, and when to try each.
Bra Size Converter
UK, US, EU, FR, and AU sizes side by side.
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Cup Volume Comparison
See which of two bra sizes holds more, and understand why.
UK bra size chart
Every UK band and cup in inches and centimetres.
Fix your fit
Fit Diagnosis
Select your fit problems and get a specific size to try.
Brands
Size ranges and size translation for twelve brands.
Track changes over time
Size Tracker
Track bra size changes over time, with your data stored only on your device.
