Blouse Size Calculator: No More Pulling Buttons
Use this blouse size calculator to stop pulling-button disasters at the bust. The fit failure on most blouses isn't bust circumference — it's bust-to-shoulder ratio. The calculator factors both, plus sleeve length, and gives you the right size for silk, cotton, and structured workwear blouses. Works for US, UK, EU, and AU sizing. Use the calculator below to get your exact fit in 30 seconds.
How it works
Measure yourself
Take your bust, waist, and hips with a soft tape. See the full measurement guide.
Enter the numbers
Type your measurements into the calculator above. Pick inches or cm — the tool converts both ways.
Get your size
Match the result against the brand's chart and order with confidence.
Women's tops & dresses — bust-driven sizing
| Size | US | UK | EU | Bust |
|---|---|---|---|---|
| XS | 0–2 | 4–6 | 32–34 | 31–33" |
| S | 4–6 | 8–10 | 36–38 | 33–35" |
| M | 8–10 | 12–14 | 40–42 | 35–37" |
| L | 12–14 | 16–18 | 44–46 | 38–40" |
| XL | 16–18 | 20–22 | 48–50 | 41–43" |
| XXL | 20–22 | 24–26 | 52–54 | 44–46" |
Frequently Asked Questions
Why do my blouses pull at the bust button even when the size matches my bust?
Shoulder width is too narrow. Many blouses are cut for a narrower shoulder than their bust spec — the bust closes but the placket gaps. Order a brand that publishes shoulder spec, or size up.
Should I size up for silk blouses?
Match exactly. Silk has zero stretch and shows pulling more than cotton. If between sizes, size up half.
How do I measure my shoulder for a blouse?
From the bony point of one shoulder across your back to the bony point of the other. Use a friend or a mirror.
What's the difference between a blouse and a shirt size chart?
Blouses are cut for women's bust shape with a narrower waist taper. A 'shirt' chart often refers to men's neck/sleeve sizing — different system entirely.
Related calculators
Run a fashion store on Shopify?
Add this calculator to your product pages. Per-product size charts, instant fit recommendations, and 30%+ reduction in sizing-driven returns.