Find Your Perfect Ring Size – India, USA, UK, EU & JP
Use our free Ring Size Calculator to get an accurate fit at home or in-store. Multiple measurement methods with support for Indian, US, UK, European, and Japanese sizing standards.
Visual Ring Sizer
Adjust the slider to match your ring or finger size
Your Ring Size
Diameter: 16.5 mm
Circumference: 51.9 mm
Most accurate method • Includes 50mm calibration line
Professional Tips
Best Time to Measure
Measure at the end of the day when fingers are largest.
Temperature Matters
Cold weather makes fingers smaller, warm weather makes them larger.
Ring Width Consideration
Wide bands (6mm+) may need to be ½ size larger than thin bands.
Knuckle Check
Ring should slide over knuckle with slight resistance.
Measure Multiple Times
Take 2-3 measurements to ensure accuracy.
Professional Fitting
When in doubt, visit a professional jeweler for accurate sizing.
Complete Ring Size Chart
| Diameter (mm) | Circumference (mm) | IN | US | UK | EU | JP |
|---|---|---|---|---|---|---|
| 14.1 | 44.3 | 4 | 3 | F | 44 | 4 |
| 14.5 | 45.6 | 5 | 3.5 | G | 45.5 | 5 |
| 14.9 | 46.8 | 6 | 4 | H | 46.5 | 6 |
| 15.3 | 48.1 | 7 | 4.5 | I | 48 | 7 |
| 15.7 | 49.3 | 8 | 5 | J | 49.5 | 8 |
| 16.1 | 50.6 | 9 | 5.5 | K | 50.5 | 9 |
| 16.5 | 51.9 | 10 | 6 | L | 52 | 10 |
| 16.9 | 53.1 | 11 | 6.5 | M | 53 | 11 |
| 17.3 | 54.4 | 12 | 7 | N | 54.5 | 12 |
| 17.7 | 55.7 | 13 | 7.5 | O | 55.5 | 13 |
| 18.1 | 57.0 | 14 | 8 | P | 57 | 14 |
| 18.5 | 58.3 | 15 | 8.5 | Q | 58.5 | 15 |
| 18.9 | 59.5 | 16 | 9 | R | 59.5 | 16 |
| 19.4 | 61.0 | 18 | 9.5 | S | 61 | 17 |
| 19.8 | 62.2 | 19 | 10 | T | 62 | 18 |
| 20.2 | 63.5 | 20 | 10.5 | U | 63.5 | 19 |
| 20.6 | 64.7 | 21 | 11 | V | 65 | 20 |
| 21.0 | 66.0 | 22 | 11.5 | W | 66 | 21 |
| 21.4 | 67.2 | 23 | 12 | X | 67.5 | 22 |
| 21.8 | 68.5 | 24 | 12.5 | Y | 68.5 | 23 |
| 22.2 | 69.7 | 25 | 13 | Z | 70 | 24 |
For best accuracy, use the printable sizer or visit a jeweler. Measure in the evening when fingers are largest.
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Our **free online Ring Size Calculator** offers multiple measurement methods including visual sizer, diameter, circumference, international converter, and quick finder. Supports India, US, UK, EU, and JP standards – no jeweler visit needed!
Find Your Perfect Ring Size Instantly & Accurately
What is a Ring Size Calculator?
A ring size calculator is a digital tool that helps you determine your exact ring size using various measurement methods including visual comparison, diameter measurement, circumference measurement, or size conversion.
Our advanced version offers **5 different methods** for maximum accuracy: Visual Sizer (interactive slider), Diameter Method (measure existing ring), Circumference Method (measure finger), International Converter (convert between systems), and Quick Finder (personalized recommendations).
Why Choose Our Ring Size Calculator?
Get professional-level accuracy from home with multiple measurement options. Perfect for surprise proposals, online shopping, or confirming sizes across 5 international standards (India, US, UK, EU, JP).
Key Features & Benefits
Here's what makes our tool the best choice:
- 5 measurement methods: Visual Sizer, Diameter, Circumference, Converter, Quick Finder
- Support for 5 sizing systems: India, USA, UK, Europe, and Japan
- Interactive visual ring sizer with real-time adjustment
- International size converter between all systems
- Quick Finder with personalized recommendations based on finger type and ring style
- Free printable PDF sizer with 50mm calibration line
- No login, registration, or app download required
- Mobile-friendly and works on phones, tablets, laptops
100% Free & No Sign-Up Needed
Use all features unlimited times for free – ideal for engagement rings, wedding bands, fashion rings, or gifts.
Perfect for everyone: first-time ring buyers, couples, or international shoppers needing accurate size conversions.
How to Use Our Ring Size Calculator
- Choose your preferred method: Visual Sizer, Diameter, Circumference, Converter, or Quick Finder.
- Visual Sizer: Adjust the slider to match your ring or finger size visually.
- Diameter Method: Measure the inside diameter of a well-fitting ring and enter the value.
- Circumference Method: Wrap string/paper around your finger, measure the length, and enter circumference.
- Converter: Select your known size system, enter the size value, and see all equivalent sizes.
- Quick Finder: Select finger type and ring style for personalized size recommendations.
- View your size instantly in all 5 international formats (India, US, UK, EU, JP).
- Download the printable PDF sizer for ultimate accuracy with 50mm calibration line.
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