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Bra Size Estimate — result sheet
Estimate a regional bra band and cup size from underbust and bust measurements.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Estimate band from underbust and cup from the bust-minus-underbust difference using the selected regional table.
The result exposes the measurement difference and regional table instead of presenting one universal bra-size standard.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Underbust measurement — minimum 40; maximum 200
- Bust measurement — minimum 40; maximum 250
- Measurement unit — 2 choices
- Sizing system — 3 choices
Worked example
| Input | Value |
|---|---|
| Underbust measurement | 85 |
| Bust measurement | 95 |
| Measurement unit | cm |
| Sizing system | eu |
Approximate EU size 85AA from a 10 cm bust-to-band difference.
Assumptions and limits
- Measurements are taken level around the body and use the selected unit.
- Brand, style, breast shape, fit preference, and regional conversion differences can change the correct size.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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