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
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US Size
-
UK Size
-
EU Size
-
Japan Size
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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
Files downloaded from unofficial sources can be infected with malware, spyware, or adware. Malicious actors can easily disguise harmful code within what appears to be a legitimate "fixed" APK. According to cybersecurity research, even official app stores have had hundreds of malicious apps slip through security checks, accumulating millions of downloads.
Instead of chasing broken mods, consider why you want the "Fixed" version. Usually, it is to avoid subscription fees. Here are legal ways to get the same features without the risk:
The fixed version often includes simulated cloud storage or unlocked local export features. This allows you to back up your highly specific control schemes and transfer them to a new tablet or phone without rebuilding them from scratch. 3. Deep Hardware Calibration
Crashing on newer Android versions (e.g., Android 13 or 14). Controlla Premium Apk Fixed
Standard modified files often suffer from crashes, broken features, or server-side blocks. A "Fixed" version indicates that a third-party developer has patched those specific bugs, making the premium features stable and usable. Key Features Expected in the Premium Fixed Version
When a new Android OS version drops, the modded app will likely break, forcing you to hunt for another "fixed" version. How to Safely Approach Third-Party APKs
: Ensure your smartphone and Smart TV are connected to the same Wi-Fi network . Files downloaded from unofficial sources can be infected
Keep your app updated to version 1.12 or higher to ensure the latest bug fixes.
Unrestricted access to all remote features and streaming shortcuts. "Apk Fixed"
This article explores what Controlla offers, the allure of a "fixed" premium APK, and crucial security considerations for users seeking enhanced functionality. What is the Controlla App? Instead of chasing broken mods, consider why you
When the word is appended to the title, it usually signifies a secondary modification. Third-party developers release "fixed" versions to resolve specific issues that occurred in previous modded releases, such as:
Optimizes app performance and reduces background data usage. 5. Zero Latency Optimizations (Fixed Feature)
Bypassing the need to log into an official server, allowing the app to run locally without verification. The Anatomy of a "Fixed" APK Modification
Your so I can recommend compatible, secure tools. Share public link
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.
