How to Figure Out Your Ring Size at Home

Buying a ring or engagement ring requires one important measurement — your ring size. If you know your ring size, you can determine the exact size of your purchase. If you’re not sure of the perfect fit, there are a few things you can do at home to figure out the right size before you go shopping. 

How to Know Your Ring Size Without Talking to an Expert  

All you need is a pen, piece of thin paper and a ruler to measure your ring size. Cut a length of narrow paper and wrap it carefully around the finger you will wear the ring on. The paper should not be too tight or loose. Then make a small mark on the paper using the pen at the exact spot where the paper starts to overlap. Use the ruler to measure the length of the paper it takes to wrap around your finger. You can also try a piece of string or even dental floss if you find the paper difficult to work with.

Once you have your measurement in millimeters (mm), compare it to standard ring sizes. 

• 16.5 mm string is a size six
• 16.9 mm string is a 6.5
• 17.3 mm string is a seven

In ring sizes, every 4 mm you increase in size, you go up a half a size.

When deciding which size is closest, keep in mind that your ring also has to fit over your knuckles. It can be useful to cut a piece of paper to the right size and seal it closed with tape. See if it will fit over your knuckles. If not, you may need a larger size.

Another option is to buy a ring measurement tool online. To use this tool, simply slide your fingers into the openings. Each opening is clearly identified with the ring size, so the one with the best fit is your size. This is likely the easiest method, but it does mean spending a few dollars on the ring measurement tool and waiting for it to ship. If you’re buying online and aren’t completely sure of your ring size, make sure you buy an item you can resize or exchange.

Figuring Out Your Real Ring Size

Making a jewelry purchase, especially an engagement ring, is a big step. Fortunately, you don’t have to choose your ring alone. When you drop by Koser Jewelers in Lancaster, Pennsylvania, a member of our team will size your ring perfectly so you can enjoy your piece of jewelry for a lifetime. We also allow you to browse and buy our selection of rings online.

The Koser Jewelers team includes Gemological Institute of America (GIA) Graduate Gemologists, designers and Jewelers of America (JA) Certified Bench Jewelers. We’re the only Master Independent Jewelers Organization (IJO) Jeweler in Lancaster County, PA, too, so we have the expertise to help you choose the perfect ring, including the right size. While there are some DIY methods in a pinch, the only way to be sure and accurate is to stop in so that a trained professional can help.

Visit us in Lancaster, call us at 717-653-4941 or contact us online to discuss ring sizing with a professional from our team.