Ring Size
Guide
Find your exact size from home with our true-to-scale interactive sizer, conversion charts, and expert fitting advice from three generations of Miami jewelers.
Interactive Sizer
Measure On Screen
Step 1 · Calibrate Your Screen
Hold any credit or ID card against the outline below and adjust the slider until they match exactly. This makes the sizer true-to-life.
Step 2 · Match Your Ring
Place one of your rings flat on the screen over the gold circle, then adjust the slider until the circle fills the inside of your ring exactly.
US Size
7
Diameter
17.3 mm
Circumference
54.3 mm
UK
N½
EU
54
Three Ways to Measure
Choose Your Method
Method 1
Use a Ring You Own
- 1Choose a ring that fits the intended finger well
- 2Place it over the interactive sizer above
- 3Align the gold circle with the ring's inner edge
- 4Read your size instantly
Method 2
String or Paper Strip
- 1Wrap a thin strip snugly around the base of your finger
- 2Mark where the ends overlap
- 3Measure the length in millimeters
- 4Match it to the circumference column in the chart
Method 3
Visit Us In Store
- 1The most accurate method — professional sizing
- 2We measure both finger and knuckle
- 3Free of charge, no appointment needed
- 4Tue–Sat · 10am–5pm · 11865 S. Dixie Hwy, Miami
Sizers, On Us
Get a Physical Sizer
Print a Sizer Now
Download our true-to-scale paper sizer with a credit-card calibration check. Cut, wrap, and read your exact US size in under a minute.
Free Sizer Kit by Mail
Prefer the real thing? We'll mail you a professional plastic ring sizer — completely free, no purchase required.
International Conversions
Size Chart
| US Size | Diameter (mm) | Circumference (mm) | UK / AU | EU / ISO |
|---|---|---|---|---|
| 3 | 14.1 | 44.3 | F | 44 |
| 3.5 | 14.5 | 45.6 | G | 45 |
| 4 | 14.9 | 46.8 | H½ | 47 |
| 4.5 | 15.3 | 48.1 | I½ | 48 |
| 5 | 15.7 | 49.3 | J½ | 49 |
| 5.5 | 16.1 | 50.6 | K½ | 51 |
| 6 | 16.5 | 51.8 | L½ | 52 |
| 6.5 | 16.9 | 53.1 | M½ | 53 |
| 7 | 17.3 | 54.3 | N½ | 54 |
| 7.5 | 17.7 | 55.6 | O½ | 56 |
| 8 | 18.1 | 56.9 | P½ | 57 |
| 8.5 | 18.5 | 58.1 | Q½ | 58 |
| 9 | 19 | 59.7 | R½ | 60 |
| 9.5 | 19.4 | 60.9 | S½ | 61 |
| 10 | 19.8 | 62.2 | T½ | 62 |
| 10.5 | 20.2 | 63.5 | U½ | 63 |
| 11 | 20.6 | 64.7 | V½ | 65 |
| 11.5 | 21 | 66.0 | W½ | 66 |
| 12 | 21.4 | 67.2 | X½ | 67 |
| 12.5 | 21.8 | 68.5 | Z | 68 |
| 13 | 22.2 | 69.7 | Z+1 | 70 |
Fit Expertise
Sizing Questions, Answered
Still Unsure? We'll Size You Perfectly.
Professional sizing is always free at our Miami showroom — or browse rings now and note your size at checkout.