Find Your Ring Size
Request a Ring Sizer
Get the right size the first time by requesting a plastic ring sizer. To order, select your preferred delivery method:
Need it fast?
FedEx Priority Overnight® or FedEx 2Day® starting at $15
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.
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:
Avoid using string or paper to measure ring size as these materials can stretch or twist, yielding an inaccurate measurement.
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.
Find Your Perfect Ring
Blue Nile provides complimentary resizing for Build Your Own Rings®, and Diamond Bands when within the manufacturer's recommended sizing range, during the first year. Simply contact a Diamond & Jewelry Consultant at 1 800-242-2728 to arrange for your free resize. You will be responsible for the cost of returning the product, according to our return policy.
Diamond and gemstone eternity rings with a specific number of gemstones per finger size; milgrain or ornate bands, some silver rings, or rings with alternative metals such as Tungsten cannot be resized. We are happy to exchange your ring for another size within 30 days of purchase. It is important to note that should you opt for an exchange, your new ring may contain fewer or more gemstones, diamonds, or a reduction or increase in precious metal weight which may cause an increase or decrease in the price.
International Size Conversion
If ordering from outside of the US or Canada, determine your ring size according to your country’s standard. Then use the International Ring Size Chart to convert to the corresponding US ring size to place your order.