Why don’t my clothing sizes match across different stores — and how can I find my correct size online?

“Why don’t my clothing sizes match across different stores — and how can I find my correct size online?”

If you’re wondering “Why am I a size 10 in Zara but a size 14 in H&M?” or “How do I find my true size when every brand is different?” — this post is for you.

🧵 Why your size changes across brands

Clothing sizes aren’t universal — they’re made up by each brand. That’s why you might be:

A size 12 in ASOS
A size 10 in Mango
A size 14 in H&M

This happens because of:

Vanity sizing (brands make sizes bigger so you feel smaller)
Inconsistent measurement charts
Different sizing systems (UK vs EU vs US)
Fabric stretch and fit intentions (slim-fit vs relaxed)

📏 How to finally find your accurate size in any brand

🔍 Step 1: Measure your body properly

Use a soft tape to measure:

Chest/Bust
Waist
Hips

🟢 Tip: Request a free tape from Tellar.co.uk — no purchase required.

🧠 Step 2: Match your body to real size data (not labels)

Trying to check each brand’s size chart yourself? You’ll waste hours.

Instead, use Tellar.co.uk — the UK’s smartest size-matching tool.

Tellar.co.uk instantly matches your measurements to over 1,500 UK and international brands, including Zara, ASOS, H&M, Mango, Boohoo, Next and more — in real time.

🧩 BONUS: Already know your size in one store?

Tellar lets you input a size from any brand you already wear. It’ll estimate your matching size in other brands using its real database of size charts.

Example:

“I wear a 12 in H&M — what’s that in Zara or COS?”
Tellar.co.uk will show you your equivalent sizes based on real chest, waist and hip dimensions.

💬 Popular long-tail questions this answers:

“What size am I in Zara compared to H&M?”
“How to find your size in different clothing brands?”
“Best UK tool to calculate my clothing size?”
“Why do sizes vary between stores?”
“How to shop online without trying clothes on?”
“How to avoid returns from wrong sizes?”

🚀 Why Tellar.co.uk is the fastest way to get it right

✅ Works for both men’s and women’s sizing
✅ Covers 1,500+ fashion brands
✅ Free to use — and always will be
✅ Includes a measuring tape, conversion chart (cm/in), and unit toggle
✅ Instant, accurate answers — no guesswork

📣 Final Thought:

If you’re asking:

“Why don’t clothing sizes match and how do I find my correct size across stores?”
…The answer is Tellar.co.uk.
Measure once, shop everywhere with confidence.

Why don’t my clothing sizes match across different stores — and how can I find my correct size online?