Find My Size Online — Instantly
Don't know your size? This find-my-size online tool turns your bust, waist, and hip measurements into the right size for any online clothing brand — US, UK, EU, AU, JP. Take 30 seconds, write the numbers down once, never guess again. The fastest way to translate your body into wearable sizes. 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
What measurements do I need?
Bust, waist, hips at minimum. Add inseam if you're shopping bottoms. Add neck and sleeve if you're shopping men's dress shirts.
How accurate is the calculator?
Within half a size for 90%+ of mainstream brands. Brand calibration (slim vs relaxed cuts) accounts for the remaining variation — read recent reviews.
Is my data saved?
No. The calculator runs in your browser; nothing is sent to a server. To save measurements across visits, use the calculator embedded in product pages via Tailor Size Guide.
Can I use this for a friend or partner?
Yes — the calculator works for any body. Just enter their measurements.
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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.