Kleora Printable Ring Sizer Guide Set print scale to 100% (disable "Fit to Printable Area")
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  1. Print at 100% Scale: Click the Print button (or press Ctrl/Cmd + P). In your printer dialog, ensure page scaling is set to 100% or "Actual Size" (do not select "Fit to Page" or "Shrink to Fit").
  2. Verify Calibration: Before cutting, verify scale using the 3 1/2 inches (8.89 cm) ruler guide above the sizer, or place any standard credit card over the calibration box below.
  3. Cut Sizer & Slit: Use scissors to cut out the Ring Sizer along the solid outline. Carefully cut along the dotted line marked "CUT HERE" to create the slit.
  4. Insert Tab: Feed the pointed dark triangle tab through the slit from behind, ensuring the printed numbers face outward.
  5. Slip onto Finger: Place the looped sizer on the desired finger and gently pull the tab until it sits comfortably snug. Ensure it slides comfortably over the knuckle.
  6. Read Your Size: Read the number aligned closest to the cut slit line. This is your accurate US ring size. If you fall between two sizes, choose the larger half-size.
CUT HERE KLEORA 3 1/2 inches (8.89cm) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
CREDIT CARD CALIBRATION CHECK Place standard credit or debit card here Standard Dimensions: 85.60 mm × 53.98 mm
How to ensure 100% accuracy:
Place any standard credit or debit card inside the box to the left. If it matches the width and height, your printer printed at true 1:1 scale without distortion.
Ring sizer looped through slit Step 4: Thread Tab Through Slit Numbers face outward; pull triangle through
Hand measuring ring finger with paper sizer Step 5: Pull Snug & Read Line Ensure smooth knuckle clearance for comfort

Compare your US ring size against inside diameter (mm), circumference (mm), and international UK/AU and EU sizing standards. Kleora rings are crafted to US comfort-fit specifications.

USDiam. (mm)Circ. (mm)UK/AUEU
314.0444.1F44.0
3.2514.2444.7F½44.7
3.514.4545.4G45.5
3.7514.6546.0G½46.0
414.8646.7H47.0
4.2515.0747.3H½47.3
4.515.2748.0I48.0
4.7515.4848.6I½48.6
515.6949.3J½49.5
5.2515.8949.9K50.0
5.516.1050.6K½51.0
5.7516.3051.2L51.5
616.5151.9L½52.0
6.2516.7252.5M52.5
6.516.9253.1M½53.5
6.7517.1353.8N54.0
717.3354.4N½54.5
7.2517.5455.1O55.0
7.517.7555.7O½56.0
7.7517.9556.4P56.5
818.1657.0P½57.0
8.2518.3757.7Q57.5
8.518.5758.3Q½58.5
USDiam. (mm)Circ. (mm)UK/AUEU
8.7518.7859.0R59.0
918.9859.5R½60.0
9.2519.1960.3S60.5
9.519.4060.8S½61.0
9.7519.6061.6T61.5
1019.8162.1T½62.5
10.2520.1063.1U63.0
10.520.2263.5U½63.5
10.7520.4364.2V64.0
1120.6364.6V½65.0
11.2520.8465.5W65.5
11.521.0565.9W½66.0
11.7521.2566.8X67.0
1221.4667.2X½67.5
12.2521.6668.0Y68.0
12.521.8768.5Y½68.5
12.7522.0869.4Z69.5
1322.2869.7Z½70.0
13.2522.4970.6Z+170.5
13.522.6971.0Z+1½71.5
13.7522.9071.9Z+272.0
1423.1172.6Z+2½72.5

Expert Sizing Advice from Kleora Gemologists

Time of Day & Temperature: Fingers fluctuate in size throughout the day. Measure in the evening when fingers are at their natural, rested size, and avoid measuring with cold hands.
Wide Band Consideration: If purchasing a ring with a band wider than 4 mm (such as eternity bands or statement bands), order half a size larger for optimal comfort.
Knuckle Clearance: If your knuckle is notably wider than the base of your finger, measure both and select a size in between so the ring slides comfortably on and off.
Complimentary Resizing: Every Kleora ring includes one complimentary professional resizing within 30 days of receipt, ensuring complete peace of mind.