Online Shopping Size Guide: One Tool, Zero Returns
This online shopping size guide is the hub for everything you need to buy clothes online without returning them. Calculator, regional conversions, brand-specific calibration, measurement tutorials — all linked from one page. Built for the shopper tired of guessing and the brand tired of return fees. 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 I keep returning clothes I buy online?
Three reasons in order: vanity sizing (your size has shifted between brands), measurement guessing (you didn't actually measure), brand calibration (this brand runs slim/loose). Fix all three with the calculator + brand notes.
What's the easiest way to know my size at any brand?
Take your measurements once, save them on your phone, match them to the brand's chart at checkout. Stop trusting 'I'm a Medium'.
How do I know if a brand runs small or large?
Check recent reviews on the specific item. Search '[brand] [item] sizing'. The phrases 'true to size', 'runs small', 'runs large' are reliable signals.
Should I ever order two sizes and return one?
Yes for high-stakes items (heels, tailored shirts, dress pants) when the brand offers free returns. Order your size and the next up; return the wrong one.
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