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.
: Capable of working without a battery, using solar power directly for loads. Lithium Compatibility
Enable (LFED) or disable (LFD) auto-restart when an overload trip occurs. ⚠️ Common Error Codes & Troubleshooting
Protect the unit from direct sunlight, rain, high moisture, and excessive dust. (Though the Veyron does feature conformal coating for internal boards and a built-in anti-dust kit, a clean environment is always best). 2. Wiring Connections inverex veyron 1.2 user manual pdf
Utility power provides power to the loads as the primary source. Solar energy charges the battery and supports the load if grid power fails or fluctuates.
SBU : Solar energy provides power first. Battery provides power next. Utility grid is used only when battery voltage drops to low levels. : Capable of working without a battery, using
The user manual emphasizes proper installation to prevent damage.
Confirms a selection or enters the program settings menu. ⚙️ Core Configuration Settings (Program Menu) (Though the Veyron does feature conformal coating for
To truly get the most out of this system, utilize its built-in advanced communication features. Many Veyron II models come with built-in Wi-Fi, allowing you to pair the inverter with your smartphone. This lets you track solar yield, grid consumption, and battery health remotely, empowering you to adjust your power usage habits efficiently.
The battery voltage is too high. Ensure you have the correct battery voltage (12V) connected, and check that your charging parameters are set correctly.
The internal components are too hot. Reduce the appliance load and improve room ventilation.
Connect solar panels according to the MPPT voltage range specified on the unit's side label. powerprovider.co.za Operational Modes & Settings
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
: Capable of working without a battery, using solar power directly for loads. Lithium Compatibility
Enable (LFED) or disable (LFD) auto-restart when an overload trip occurs. ⚠️ Common Error Codes & Troubleshooting
Protect the unit from direct sunlight, rain, high moisture, and excessive dust. (Though the Veyron does feature conformal coating for internal boards and a built-in anti-dust kit, a clean environment is always best). 2. Wiring Connections
Utility power provides power to the loads as the primary source. Solar energy charges the battery and supports the load if grid power fails or fluctuates.
SBU : Solar energy provides power first. Battery provides power next. Utility grid is used only when battery voltage drops to low levels.
The user manual emphasizes proper installation to prevent damage.
Confirms a selection or enters the program settings menu. ⚙️ Core Configuration Settings (Program Menu)
To truly get the most out of this system, utilize its built-in advanced communication features. Many Veyron II models come with built-in Wi-Fi, allowing you to pair the inverter with your smartphone. This lets you track solar yield, grid consumption, and battery health remotely, empowering you to adjust your power usage habits efficiently.
The battery voltage is too high. Ensure you have the correct battery voltage (12V) connected, and check that your charging parameters are set correctly.
The internal components are too hot. Reduce the appliance load and improve room ventilation.
Connect solar panels according to the MPPT voltage range specified on the unit's side label. powerprovider.co.za Operational Modes & Settings
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.
