Match My Size: Compare Sizes

Small Tools Studio

About this app

Match My Size compares a new item's size chart to clothes you already own and love the fit of — so you know which size is actually closest before you buy.

Bought something online that turned out to be the wrong size — again? You're not alone. Every brand sizes differently, and "Size M" doesn't mean the same thing everywhere.

Match My Size doesn't guess for you. It compares real numbers.

HOW IT WORKS

Save a favorite. Pick something you already own that fits you well — a shirt, a pair of jeans, anything — and enter a few of its measurements (chest, length, whatever you have on hand). No scale needed, just the numbers already on the tag or a quick tape measure.

Found something new? When you're eyeing a new item online, enter the sizes it comes in from the size chart — or, if you only have a screenshot of the chart, use the built-in scanner to pull the numbers automatically.

See your closest match. Match My Size compares the new item's sizes against what you saved and shows you the one size that's closest, along with the actual numbers behind it — like "sleeve is +2cm" or "chest was not compared because it's missing from your reference." No black-box score, no promises about fit. Just the shared measurements, laid out plainly, so you're deciding with real information instead of a guess.

WHY IT'S DIFFERENT

No spreadsheets, no size charts to decode by yourself — just save, compare, see the answer.

Works without an account. Guest mode lets you save a favorite and run a comparison with nothing stored after you close the app.

Sign in (optional) to save up to 5 favorites and sync them across your devices.

Privacy-first. Any screenshot you scan is processed only on your device and is never uploaded or stored anywhere.

Honest language throughout. We tell you which size is closest, not what to buy.

Match My Size doesn't replace your own judgment about fit — it just gives you the numbers to make a better-informed choice before you order, instead of finding out you guessed wrong after the package arrives.

What’s new

This update fixes a few small display issues so button labels and comparison numbers line up more cleanly. Thank you for using Match My Size.