Printable Ring Size Guide

Blue Nile realizes that you may not know the ring size for a given finger, and we want to help. We provide a printable ring sizer that can help you determine your ring size. Prior to printing, ensure that page scaling is set to "none" on your print dialog box.

View Ring Sizer

Other International Ring Sizers

(These documents are PDF files PDF and require Adobe Acrobat Reader. If you do not have Acrobat Reader download it for free.)



Measuring Your Finger

Your ring should fit your finger comfortably; snug enough so that it will not fall off, but loose enough to slide over your knuckle.

Finger size changes depending on the time of day and the weather. For best results measure your finger size:

  1. At the end of the day and when your fingers are warm (Fingers are smaller in the early morning and when cold.)
  2. Measure finger size 3 to 4 times to eliminate an erroneous reading.

Avoid using string or paper to measure ring size as these materials can stretch or twist, yielding an inaccurate measurement.

Ring Sizes in Canada

Women’s rings typically range from size 3 to 9. The most commonly purchased women’s ring sizes at Blue Nile range from size 5 to 7. Size 6 is the most popular ring size.

Men’s rings typically range from size 8 to 14. The most commonly purchased men’s ring sizes at Blue Nile range from size 8 to 10-½. Size 9 is the most popular ring size.

Tips for Buying the Ring as a Surprise

Ask your significant other’s friends or mother if they know her finger size.

Borrow one of your significant other’s rings (from the correct finger) and use the ring measurements above to determine its size.

Free Resizing

Blue Nile provides complimentary resizings during the first year. Simply phone a Diamond and Jewellery and Consultant at 888-565-7609 to arrange for your free resize.

International Ring Size Chart

Circumference (mm)Diameter (mm)
(Most EU countries, including Germany and France)
United States and Canada UK, Europe, and Australia
Asia
(Hong Kong, China, Singapore, Taiwan, Japan and Macau)
Switzerland
44.214.13F44
44.814.3 5
45.514.5G  
46.114.7 6
46.814.94H7 
47.415.1  
48.015.3I8 
48.715.5 J 9
49.315.759 
50.015.9 K 10
50.616.110 
51.216.3 L 11¾
51.916.561112¾
52.516.7 M12 
53.116.91314
53.817.1 N  
54.417.371415¼
55.117.5 O  
55.717.71516½
56.317.9 P  
57.018.181617¾
57.618.3Q   
58.318.517 
58.918.8 R 19
59.519.0918 
60.219.2 S 20¼
60.819.419 
61.419.6 T 21½
62.119.81020 
62.720.0 U21 
63.420.210½22¾
64.020.4 V  
64.620.61123 
65.320.8 W 25
65.921.011½24 
66.621.2 X  
67.221.4122527½
67.821.6 Y  
68.521.812½Z2628¾
69.122.0   
69.722.213 27 
70.422.4 Z+1  
71.022.613½