The Size Recommendation Engine.
The global leader in fit prediction: every month, we tell millions of online clothes shoppers which size to buy.
Meet the world’s biggest stores.
We work with hundreds of leading brands and retailers.

Data supersized.

Fit Analytics machine-learning algorithms are fed by the biggest data-set in the industry:

More than 2.5 million unique items.

More than 15,000 brands.

More than 1 billion purchases and returns.

More than 5 billion page views.

Nina wants to buy a shirt:
  • 5' 8'' / 135 lbs / 32 years old.
  • prefers a slightly tighter fit.
Sara bought the same shirt in size M and has a similar fit profile to Nina.
Find your double.
Fit Analytics matches you with your body doubles and recommends the size they bought and kept.
Try it yourself.
Here are just a few of the 2.5 million products we support.
Pick any item to find your size.
Get started.
Interested in adding the Size Advisor to your store?
Someone from our office will contact you within two business days.