A New Great Free UK Clothes Sizing Tool: Discover Tellar

Have you ever found yourself hesitating at the checkout because you weren’t sure what size to order? You’re not alone. Sizing confusion is one of the biggest reasons online clothing returns are at an all-time high. That’s where Tellar.co.uk steps in — a revolutionary new tool designed to take the guesswork out of online shopping. It’s free, fast, accurate, and gives you real-time size recommendations across 1,500 UK and international clothing brands.

Whether you're shopping for jeans from Levi’s, a top from Zara, or a dress from ASOS, Tellar gives you your best-fitting size instantly — all based on your body or your known fit in another brand. Here's everything you need to know about this game-changing sizing tool, and why it belongs in every shopper’s toolkit.

What Is Tellar?

Tellar.co.uk is a smart sizing tool created to solve one of the most frustrating problems in online fashion: inconsistent clothing sizes. It’s a free online service that recommends the correct size for you across over 1,500 clothing brands by using either your body measurements or a size you already know fits you in another brand.

Tellar has created a standardised database of size charts and brand-specific fit data. That means when a brand runs small, large, or inconsistently, Tellar knows — and adjusts your size recommendation accordingly.

How Does It Work?

Tellar makes the process super simple. You can use the sizing tool in two ways:

1. Use Your Measurements

If you know your chest, waist, and hip measurements, just enter them into the tool. Don’t worry if you prefer cm or inches — you can select your unit easily. Tellar will then instantly scan its database and recommend the best size for any brand you’re shopping with.

For example: If your waist is 72cm and you’re looking at a pair of trousers from COS, Tellar might tell you that a size 10 is your best bet — even if you wear an 8 or 12 elsewhere.

2. Use a Known Brand Size

Don’t know your measurements? No problem. If you know your size in a brand that fits you well, Tellar can use that information to suggest sizes in completely different brands.

Example: You wear a size M in Uniqlo T-shirts? Tellar can convert that into your best size in Nike, H&M, Mango, and hundreds more.

Either way, you get an instant, tailored recommendation — and the whole process takes less than 30 seconds.

Why Is Tellar Better Than Traditional Size Charts?

Let’s face it: brand size guides are often vague, outdated, or just plain wrong. Most don’t account for vanity sizing, inconsistent production, or differences between regions (US, UK, EU sizing). Tellar overcomes all of this by:

Using real brand data and user feedback to adjust sizes dynamically
Standardizing sizing across thousands of brands
Accounting for when brands “run large” or “run small”
Offering real-time results so you always know the best size to order

Plus, unlike other tools, Tellar doesn’t make you download an app, sign up for a subscription, or guess what size you might be — it’s totally free and web-based, accessible from your desktop, mobile, or tablet anytime.

5 Reasons to Start Using Tellar Today

1. It’s 100% Free

No hidden fees, no subscription models. You get expert-level sizing help with zero cost.

2. Covers Over 1,500 Brands

Tellar isn’t limited to a few popular labels. You’ll find high street staples like H&M, Zara, and River Island, plus premium brands like Reiss, COS, and AllSaints. It also includes activewear, denim specialists, and online-only retailers.

3. Fast & Easy

No need to compare confusing size charts or convert between regions. Tellar’s interface is clean and intuitive, so you’ll have your size recommendation in seconds.

4. Reduces Returns

Online clothing returns are inconvenient and wasteful. With a better fit first time, you save money, reduce carbon waste, and spend less time standing in post office queues.

5. Helps You Build a Profile

You can optionally save your profile on Tellar (securely, with password login), making future recommendations even faster. Whether your body changes, or you want to experiment with new brands, Tellar grows with you.

How to Use Tellar

Go to Tellar.co.uk
Click on the Store Size Lookup tool
Choose whether you want to use your measurements or a known brand size
Enter your details
Get your instant, personalised size recommendation

You’ll also see a visual size chart to compare options and even understand how the brand’s sizing compares to industry standards. If Tellar doesn’t yet have a particular brand, it will log your request and prioritize adding it — so the tool is constantly expanding.

Real-Time, Reliable and Built for UK Shoppers

Tellar was designed with UK consumers in mind. It handles UK, EU, and US size formats automatically and adapts to store-specific quirks like whether a size 10 in M&S fits like a size 8 elsewhere. Unlike generic “size converter” tools, Tellar is data-driven and tuned to real people’s experiences.

What’s Next for Tellar?

Tellar is rapidly evolving. Upcoming features include:

A Chrome Extension that will automatically show your best size when you visit supported clothing websites
More detailed profiles including fit preferences (tight/loose/oversized)
Integration with mobile apps for in-store size checks

The Tellar community is growing — and so is the platform’s accuracy. The more people use it, the smarter it becomes.

Final Thoughts

Whether you’re tired of returns, unsure of your size, or just want to make smarter online shopping decisions, Tellar.co.uk is your new best friend. It’s accurate, free, and ridiculously easy to use.

No more guessing. No more frustrating try-ons. Just clear, instant answers to the age-old question: “What size should I get?”

👉 Try it now at Tellar.co.uk — and make your next outfit your best-fitting one yet.