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A Guide for How to Measure Your Ring Size at Home

There are three common ways you can measure your ring size right at home so you can finally get the perfect fit, for good.

U.S. ring sizes follow a scale of numbers (and half numbers), typically from ring size 3 to 13.5 for adults. Women’s rings are commonly between sizes 3 and 9, while men’s rings are usually sized between 8 and 14. Those units match up to your finger’s width in millimeters: A ring size 3 fits a ring finger (or any finger) that is 14 millimeters across, and the sizes climb from there. The average ring size for women is between 5 and 7, but it’s always best to get an exact ring measurement before spending a lot of money—that average engagement ring cost isn’t cheap.

Below are three common and easy ways to measure your ring size at home—using string, a ring size chart, and a ring sizer—so you can get the right piece of jewelry, whether it’s a treat-yourself gift or a wedding ring.

· Option one: Use string or floss to measure your finger

  • Use a piece of string or dental floss and wrap it around the base of your finger.

  • Use a pen to mark the point on the string where the end meets.

  • Use a millimeter ruler to measure the string.

  • Choose the closest measurement to the chart above to find your ring size.

· Option two: Place a Ring you already own on a Ruler

Measure a Ring You Already Have!

  • Just take your ruler and measure straight across the inside of the ring from edge to edge.

  • Take the diameter measurement in millimeters.

  • Use our measurement-conversion chart to find your ring size.

· Option three: Buy your own ring sizer

If you’re worried about one of the above two strategies not guaranteeing accuracy, you can purchase your own ring-measurement tool. They don’t tend to be expensive, and there are many options online so, again, you don’t have to leave your house to get this step accomplished.

Pointers you should keep in mind:
Consider your knuckle. If you know your knuckle is on the larger side, you should order half a size bigger than what your finger alone indicates, otherwise, you won’t be able to slide a ring into the right place.
Ensure accuracy with multiple tries. Experts recommend measuring your finger three to four different times because the size actually fluctuates depending on temperature: It can be smaller the colder you are and more swollen if you’re overheated.

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