Free iPhone ring sizer app: measure a ring on screen, measure finger width, convert US, UK, EU, JP and letter sizes, and save sizes in seconds.
5.84k+ downloads · 4.8 stars
Updated iPhone interface
The updated app keeps ring measurement, finger measurement, conversion, and saved sizes cleanly connected.
Measure a ring, measure a finger, convert standards, and save sizes without visiting a jeweler.
Ring Measurement
Place a ring on the circle and adjust the guide until the inner edge matches.
Saved Sizes
Keep important ring sizes ready for yourself, family, partners, and gift planning.
Global Size Standards
Convert between US, UK, EU, Japan, Australia, India, and millimeter measurements.
Finger Width Mode
No ring? Measure your finger directly across the on-screen bar and fine-tune the millimeter value.
Offline & Private
Works fully offline. Your data never leaves your device. Zero tracking.
Instant Results
Your size appears immediately in all major standards — US, UK, EU, and more.
Engagement Ready
Planning a surprise proposal? Secretly measure a ring while they're away.
Size History
Track how your ring size changes over time with measurement history.
Clean iPhone UI
Large controls, clear rulers, and focused sheets make each sizing task easy to follow.
Use our free online tool. No download needed.
Step 1: Calibrate Your Screen
Place a standard credit card on your screen for pixel density calibration.
Place your ring on the screen and drag the handles to match its inner edge.
Your Ring Size
-
US Size
-
UK Size
-
EU Size
-
Japan Size
-
Diameter (mm)
Tip: Calibrate your screen with a credit card first for maximum accuracy. Want size history, family profiles, and advanced features? Download the app.
A standard credit card is 85.6mm wide. Drag the handles to match your card's width exactly.
No jeweler visit. No guesswork. Just your phone.
Choose a Mode
Measure an existing ring on the circle, or switch to finger width mode when no ring is available.
Align the Guide
Use the ruler, slider, and plus/minus controls to match the ring or finger width precisely.
Save or Convert
See the measurement instantly, save it for later, or convert it between international standards.
Buy jewelry anywhere in the world with confidence.
US
& Canada
UK
& Australia
EU
Europe
JP
Japan
IN
India
mm
Diameter
Ring Sizer works entirely offline. Your measurements never leave your device. We don't collect, share, or sell any of your data. Ever.
"Used this app to measure ring size. It's accurate and it's really helpful."
Pradep12 · App Store Review
Accessing the VAG EDC15 PETKA protected ECUs requires strict adherence to the Seed/Key thread activation. For variants , standard K-Line tools are usually sufficient provided the key algorithm is correct. For 88 , technicians often face stricter timing windows. Ensuring the "Top" level requirements—correct checksum calculation and clean thread timing—are met is essential to avoiding ECU lockouts.
Install the required .NET Framework 4.8 (or higher) and Visual C++ Redistributable packages. 2. Extracting and Initial Setup
: Users gain access to 3D views of spare parts, preview images, and technical connector information (TKR) provided via image, video, or PDF. System & Language Support
PETKA is a large piece of software, typically around 13.9 GB in size. It is released for free by its creators, who emphasize that . petka 85 86 88 activation thread requirement top
Select your preferred vehicle data sets (Volkswagen, Audi, SEAT, Škoda, or Porsche). 3. Acquiring and Formatting the HWID
Activating Petka 85 86 88 can seem daunting, but with the right information, it's a breeze. By understanding the thread requirements and top activation methods, you'll be able to enjoy the game without any issues. Remember to check system requirements, use a legitimate copy, and update your drivers to ensure a smooth gameplay experience. If you encounter any issues, don't hesitate to contact the game's support team for assistance.
: You must provide your unique Hardware ID , which is displayed in a dialog box when you first run the PETKA software after installation. Accessing the VAG EDC15 PETKA protected ECUs requires
If you encounter a closed thread, search for the most recent activation thread for version 8.5, 8.6, or 8.8. Typically, the community will create a new thread with an updated title, such as "PETKA 8.5 / 8.6 / 8.8 ACTIVATION THREAD" . As of late 2024 and into 2025, the most active thread is the merged one covering all three versions .
Once you meet the requirement, you can follow these steps to get your activation code.
PETKA 8.5, 8.6, and 8.8 represent a remarkable achievement in community-driven reverse engineering, providing thousands of mechanics and car enthusiasts access to dealer-level parts data for free. However, the serves as a critical gatekeeper. Extracting and Initial Setup : Users gain access
Users must install specialized "Hardlock" emulators that trick the software into thinking a physical security dongle is present.
Here are some additional tips and tricks to keep in mind when activating Petka 85 86 88:
Guides, tools, and charts to help you find the perfect fit.
Ring Size Chart
Complete conversion chart for US, UK, EU, Japan, and Australian ring sizes with diameter in mm.
How to Measure Ring Size at Home
5 free methods to find your ring size without visiting a jeweler — app, string, paper strip, and more.
Ring Size Calculator
Enter your ring diameter or circumference to instantly find your size in every international standard.
UK Ring Sizes (A–Z)
British letter-based sizing guide with full chart, Hatton Garden tips, and UK to US conversion.
Men's Ring Size Guide
Average men's ring sizes, measurement tips, and a complete chart for wedding bands and signet rings.
Secret Engagement Ring Sizing
How to find your partner's ring size without them knowing — clever tips for surprise proposals.
Free to download. Works on iPhone. No tools needed.
