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
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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
By understanding the important role of the product key and following the correct support channels, you can successfully preserve your family's history. Remember to always use legitimate software to ensure a secure and functioning system.
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A popup window will display the complete product key actively unlocking the software. Copy this string down for your new installation. 2. Look Up the Registration Database vidbox vhs to dvd 90 deluxe product key 2021
: Users can create photo slideshows and convert audio from cassettes or LP records into digital files. Managing Your Product Key
How to Safely Find and Recover Your VIDBOX VHS to DVD 9.0 Deluxe Product Key
Digital video standards change. A "cracked" version of the 9.0 software from 2021 may lack the drivers necessary to run on modern versions of Windows 10 or 11. How to Properly Retrieve Your Key By understanding the important role of the product
If the key is permanently lost, you cannot bypass the software prompt. However, you do not necessarily need to buy the entire hardware bundle again. Contact Vidbox Support
: Always purchase software and product keys from legitimate sources to avoid counterfeit products and potential security risks.
If you already have the program installed and running, you can find the key within the application: Open the VIDBOX program. If you have lost your original key or
: If you do not have a key, you can purchase a digital download license directly from the VIDBOX Official Store . Product Overview: VIDBOX VHStoDVD 9.0 Deluxe
Legitimately activated software receives patches to remain compatible with newer Windows and macOS updates. Cracked versions will eventually stop working. How to Safely Activate and Use Vidbox
The key is typically found on a sticker inside the original product packaging, on the installation CD sleeve, or in your email receipt if purchased digitally.
Insert your VHS tape, press Play on your VCR, and click the Record button in the software interface. Keep track of the recording time to ensure your hard drive has enough storage space for the resulting digital file. 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.
