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
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UK Size
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EU Size
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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
: During her six-year ordeal, several videos were released by the FARC to prove she was still alive. The most famous was seized in
by FARC guerrillas. She described the environment as one of "barbarity" where she and other hostages were treated as "merchandise" to be traded for jailed rebels. Proof-of-Life Videos
Ingrid Betancourt, a Colombian-French politician and presidential candidate, was kidnapped by the Revolutionary Armed Forces of Colombia (FARC) on February 23, 2002 , while campaigning in a rebel-held region. Conditions of Captivity Video Violacion Ingrid Betancourt Por Farc - Google
However, note that some content may be graphic or disturbing. Be sure to approach such topics with sensitivity and respect for those affected.
On July 2, 2008, Colombian commandos launched a daring rescue operation, freeing Betancourt and several other hostages. The successful mission was hailed as a major victory for the Colombian military and a significant blow to the FARC. : During her six-year ordeal, several videos were
During her six-year detention, Betancourt was subjected to harsh conditions. She was held in a remote jungle area, forced to live in a makeshift camp, and was often denied basic necessities like food, water, and medical care. There were reports of physical and psychological abuse, as well as forced labor and indoctrination.
Public interest often stems from "proof-of-life" videos released by the FARC during her captivity, most notably a 2007 video showing her emaciated and wearing chains. After her rescue in (2008), she gradually shared the harrowing details of her ordeal. Betancourt book recounts ordeal | News - Al Jazeera On July 2, 2008, Colombian commandos launched a
While search terms like "Video Violacion Ingrid Betancourt Por Farc" reflect persistent online rumors or malicious disinformation, of Betancourt. However, Betancourt has personally addressed the traumatic reality of sexual violence and physical abuse she endured during her 2002–2008 captivity. The Truth Behind the Rumors
The abduction of Ingrid Betancourt by the FARC was a traumatic event that sparked international concern and outrage. Her six-year ordeal is a testament to the human spirit and the importance of standing up against violence and oppression. This topic serves as a reminder of the complexities and challenges of conflict resolution, and the importance of promoting peace, justice, and human rights. For more information on this topic you can check out: colombiapeace.org and ingridbetancourt.com
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.
