Ring Sizing
American Ring Size
Free · Designed for iPad. Not verified for macOS.
Find the perfect ring size in seconds! Measure ring diameter directly on your screen and convert between all major international ring size standards.
Ring Size
Find the perfect ring size quickly and accurately.
Ring Size makes it easy to determine the correct ring size for yourself or someone special. Simply place a ring directly on your iPhone or iPad screen and adjust the on-screen circle with the slider until it perfectly matches the inside diameter of your ring.
The app instantly calculates all important measurements and converts them into the most common international ring size standards.
Features
• Measure ring size directly on your screen
• Precise diameter adjustment with an easy slider
• Calculate ring circumference in millimeters and inches
• Display the inside diameter
• International ring size standards:
* European sizes
* US sizes
* UK sizes
* Japanese sizes
• Supports the Pacher sizing method
• Fast, accurate and easy to use
• Perfect for jewelry shopping, jewelers and goldsmiths
Whether you're buying an engagement ring, wedding band or fashion jewelry, Ring Size helps you find the perfect fit and avoid costly mistakes.
An essential tool for online jewelry shopping and professional use.
Ratings & Reviews
• New on-screen ring measurement for greater accuracy
• Improved slider for precise diameter adjustment
• Enhanced display of international ring size conversions
• Modernized user interface
• Improved performance and stability
• Minor bug fixes and design improvements
The developer, Gerhard Lentschik, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Gerhard Lentschik
- Size
- 10.9 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © Gerhard Lentschik