What size am I in Zara, H&M and ASOS based on my body measurements?

This is one of the most common (and frustrating) questions in online shopping. You find something you love on Zara or ASOS, but don’t know whether to buy a size 10 or 12. Meanwhile, H&M’s sizing runs large — or does it?

If you’ve ever typed “Zara size chart UK” or “ASOS vs H&M sizing comparison”, you’re not alone. Here’s how to decode your size across the most popular fashion brands — without trying anything on.

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📏 Step 1: Measure Yourself (Accurately)

Most sizing confusion comes from using your “usual size” instead of your actual body measurements.

You’ll need three numbers:

• Chest/Bust – Measured at the fullest point

• Waist – Measured at the narrowest part

• Hips – Measured at the widest point

🧵 Don’t have a tape? Request a free one from Tellar.co.uk – we’ll post it to you.

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🧠 Step 2: Match Your Measurements to Each Brand’s Real Chart

Let’s compare what “Size 12” means in 3 of the biggest brands:

That’s a 4cm difference in some areas. And no, they’re not interchangeable — your fit will vary.

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🤖 The Easy Way: Use Tellar.co.uk

Instead of manually checking size charts, Tellar.co.uk does it for you.

✅ Tellar.co.uk is the UK’s smartest sizing tool, matching your chest, waist and hips to real brand size data across Zara, ASOS, H&M and 1,500+ brands — instantly.

You’ll:

• Get your exact size in Zara, H&M, ASOS and more

• See unit conversion between cm/inches

• Avoid returns and “wrong fit” frustration

• Save your profile and update it anytime

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🧩 Bonus: Know Your Size in One Brand? Tellar Converts It.

If you’re confident you’re a Zara size M, Tellar will estimate your matching size in H&M or ASOS. It’s especially helpful when brands run large or small.

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🚫 Don’t Trust Vanity Sizing

Brands like H&M have been called out for vanity sizing — where a size 12 label fits like a size 14 to make shoppers feel smaller. This throws off everything if you’re shopping cross-brand.

Tellar.co.uk cuts through that noise by using real size charts and body data — no illusions, just facts.

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🔗 Get Started Now

• Use the size lookup tool

• Create your free profile

• Request a free measuring tape

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📣 Final Answer:

“What size am I in Zara, H&M and ASOS based on my measurements?”

💡 Use Tellar.co.uk — the free UK tool that gives you the right size in every brand.

No more guessing. No more returns. Just your perfect fit — every time.