Browse the brand database, or ask ThisFits for a personal recommendation.
ThisFits is a sizing database covering clothing and shoe brands. Every brand page shows whether it runs small, true to size, or runs large, with notes by category so you know where it matters most.
Tell ThisFits your usual size at any brand, it figures out what to order elsewhere. Ask things like "I’m a 29 in Levi’s, what should I buy at Agolde?" or "Does Reformation run small for dresses?"
Browsing the brand directory is free. Free accounts get one sizing chat per day. Pro removes the daily limit and adds saved measurements, brand alerts, and priority responses.
Do I need an account?
No. You can browse every brand page and read sizing tendencies without signing up. Create a free account to save your sizes and unlock daily sizing chats with ThisFits.
Which brands are covered?
197+ clothing and 60+ shoe brands, including Zara, ASOS, H&M, Mango, Nordstrom, Reformation, Uniqlo, Nike, Adidas, On Running, Birkenstock, and more.
How does the sizing chat work?
Tell ThisFits your usual size at one brand and it tells you what to order at another. It uses brand-level sizing tendencies, runs small, true to size, runs large, to translate across the directory.
What does Pro unlock?
Pro removes the daily chat limit and gives you saved measurements, brand alerts when new sizing data is added, and faster responses.
Is my data private?
Yes. Your sizes and chat history are encrypted and never shared with retailers or third parties. You can delete your data at any time.
370+ brands · clothing and shoes · free to browse
Create a free account