Inches guide
If you measure in inches, this page keeps everything in that unit from start to finish. You can calculate quickly, then cross-check your fit with the full bra size calculator experience.
Bra size calculator
Two measurements. A starting size for your fit.
For the most accurate fit, wear a non-padded bra and stand naturally.
Snug around your ribcage, below your bust.
Around the fullest part, without pulling tight.
Want a more detailed estimate? Use 6 measurements
Keep the tape parallel to the floor on both measurements. Use the same tape and body posture for each reading so your calculation has consistent inputs.
Read the full measuring walkthroughEnter your measured values first. The calculator handles sizing logic more reliably when you avoid manual rounding.
Yes. The same calculator supports centimeters; use this inches flow when your tape or region uses inch-based measuring.
Related tools
Use six measurements for a more detailed fit check when the standard result feels close but not quite right.
Open Advanced bra size calculatorFind nearby sizes when your cup volume feels close but the band needs adjusting.
Open Sister size calculatorCompare band and cup labels across common sizing systems before shopping.
Open Bra size chartConvert sizes between US, UK, EU, French, and AU/NZ labels.
Open Bra size converterLearn what band numbers and cup letters mean in real fit terms.
Open Bra size meaningsFollow the full measuring tutorial if you want more detail before using the calculator.
Open How to measure bra size
