WHATSIZE: Brand Size Converter

Clothing & Shoe Fit Guide

$2.99 · Designed for iPad

Convert brand sizes (Nike, ZARA) or standard units (US, EU, UK). No subscriptions. Works 100% offline. Universal size converter included. Stop guessing your size. Get it right, every time. WHATSIZE is the essential size converter for global shoppers. Convert clothing and shoe sizes instantly - whether you need a specific brand recommendation or a standard international conversion. EXAMPLES: • Know your Nike size? Find your size in ZARA in seconds. • Wear a UK 12? See what that is in US, EU, Japanese, Korean, and Chinese sizing. • Own Levi's W32 L34? Find your fit in Gap or H&M without trying anything on. • Shopping on ASOS from Germany? Convert EU sizes to UK instantly. TWO WAYS TO FIND YOUR FIT: • Brand-to-Brand: Use items you already own from top brands to find your perfect fit in another. • Universal Conversion: Instantly convert standard sizes between US, UK, EU, and Asian (JP/KR/CN) regions. SUPPORTED CATEGORIES: • Tops, bottoms, dresses, outerwear, and shoes • Men's, women's, and kids' • US, UK, EU, JP, KR, CN regions KEY FEATURES: • Your Personal Digital Closet: Save your sizes (and your family's!) for instant access while shopping. • 100% Offline: Works perfectly in dressing rooms and during international travel. • Privacy First: No accounts. No tracking. No ads. Your data never leaves your device. • Pay Once, Use Forever: No subscriptions. Every future update and brand addition is included. SUPPORTED BRANDS: Nike, ZARA, Adidas, H&M, Levi's, Gap, Uniqlo, and ASOS - with more added regularly based on user requests. Missing a brand? Request it directly in the app. https://whatsize.online

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Added a "Rate on App Store" link in Settings. The app may occasionally ask for a rating after successful conversions. Updated branding to WHATSIZE: CLOTHING throughout the app including the launch screen.

Version 2.0.6

The developer, Ashby, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer indicated that this app supports the following accessibility features. Learn More

    • Supported Features

      • VoiceOver

      • Dark Interface

      • Sufficient Contrast

    Information

    Seller
    • Ashby
    Size
    • 6.1 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 17.6 or later.
    • iPhone
      Requires iOS 17.6 or later.
    • iPad
      Requires iPadOS 17.6 or later.
    • Mac
      Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.3 or later.
    Languages
    English and 7 more
    • English, Dutch, French, German, Japanese, Korean, Simplified Chinese, Spanish
    Age Rating
    4+
    Copyright
    • © 2026 Ashby
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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