How to Measure Ring Size at Home

Don’t know how to measure ring size? Use our ring size chart and get tips on how to measure ring size for engagement rings, wedding rings and promise rings.

Understanding Ring Size

When it comes to engagement rings and wedding rings, one thing is for sure: size matters. Standard ring sizes are given in millimeters based on the inner circumference of the ring. Just like clothing, rings are sized on a standard scale so that a woman’s size 6 is the same from jeweler to jeweler. With that said, if you’ve ever bought jeans from different brands, you’re well aware that a clothing size 6 doesn’t always fit the same way—and it’s no different for rings.

How to Measure Ring Size at Home

If the mandrel set and plastic ring sizer seem like overkill, try a printable ring sizer, paper ring sizer or the string test, using the ring sizing chart below.

Printable Ring Sizer

This ring size method is based on the inside diameter measurement of a ring that fits the fourth finger of the left hand.

1. Print the the ring size chart. To make sure it’s printed to actual size, choose “Scale 100” when selecting your print options.
2. Place the ring over the circles, lining up the inside edges of the ring to the circle that best matches on the ring size chart. If the ring is in between two sizes, choose the larger ring size.

Printable Paper Strip Ring Size

This ring size method uses a tape measure approach with specific ring metrics.

1. Print the ring sizer, making sure that it is printed to actual size.
2. Cut out the ring sizer and open the slot where marked.
3. With the numbers facing out, slip the tip of the ring sizer through the slot.
4. Place the sizer on your ring finger and carefully pull taut to read the finger size.

String Ring Sizer

This ring size method provides a flat measurement tool to be used with a plain piece of string.

1. Print the ring size chart, making sure that it is printed to actual size.
2. Wrap a piece of string around your ring finger and cut it at the point where the end overlaps.
3. Line the string up with the ring size guide provided on the ring size chart. The one that best matches is your ring size. If the ring is in between two sizes, choose the larger ring size.

While each of these ring size methods is fast, convenient and free, there may be accuracy discrepancies due to things such as printer settings or stretch of the string. Consider using more than one ring size method for a “measure twice, cut once” approach to ring sizing. And always use any tools or follow any tips provided on the jeweler’s website.

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