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Wondering how to measure your ring size at home? Learn 3 methods for sizing your ring fingers at home and ensure a proper fit.

Three Ways to Measure Your Ring Size at Home

The last thing you want to do when shopping for a ring is to get your ring size wrong. Resizing a ring can be a pain, and can be avoided if you take the steps to properly determine your ring size. With our handy guide, you will be able to measure your ring size from the comfort of your home. 

The Most Common Ring Sizes for Men and Women

  • The most common ring sizes for women are 6 (16.5 mm), 6.5 (16.9 mm), and 7 (17.3 mm).
  • For men, the most common sizes are 10 (19.8 mm), 10.5 (20.2 mm), and 11 (20.6 mm).

Tips for a Proper Fitting

Allow enough room to accommodate your knuckle. 

If you have a large knuckle, take two measurements, one of your finger base and one of your knuckle. Order your ring half a size bigger than the measurement of the base of your finger, or choose a size between the two measurements. 

Measure multiple times

Measure your finger three to four different times during the day because your ring size fluctuates due to temperature changes. Measure once in the morning, early and late afternoon, and once before bed. 

Measure a specific finger

Because the same finger on different hands can be a different size, make sure to measure the specific finger you are wanting a ring for. 

In-between sizes

If you measure between two sizes, choose the larger size.  

measure ring size with string

Method 1: Using a String or Dental Floss

Steps:

  1. Wrap a piece of string or dental floss around the base of your finger.
  2. Use a pen to mark the point on the floss where it meets. 
  3. Take the floss and hold it up to a millimeter ruler. 
  4. Choose the closest measurement on a ring chart to find your ring size. 

With standard ring sizes, every half a size matches up to a 0.4 millimeter increment.

  • size 3 equals 14.1 mm 
  • size 3.5 equals 14.5 mm
  • size 4 equals 14.9 mm, and so on. 

Caution

String and floss can stretch, so don't force your measuring tool too taut or you will measure your ring size smaller than what it will be with a more rigid material.

ring sizing chart

Method 2: Using a Ring you Already Own

  1. Take a ring that you own and like the fit of.
  2. Print out a true-to-size ring sizing chart (see one here)
  3. Place your ring on the circles until you find the one that matches up with the inside circumference of your ring.
  4. The chart will tell you how many millimeters the matching circle is as well as what ring size that measurement correlates to.
measure ring size at home

Method 3: Buying a Ring Sizer

If you are concerned the above two methods won't give you the most accurate results, you can purchase your own ring-measurement tool. They are not very expensive and will allow you to actually try on a ring size.

There are two types of sizing tools, a thin measuring tape or a key-ring lined with a gradient of rings. Etsy has ring sizers you can order. 

Conclusion

Measuring your ring size at home is not a difficult process, and in the end you will have a ring you love, that fits just right. 

If you have any questions, please leave them in the comments below, I always answer!

Happy Ring Sizing, 
Andrea

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Andrea

I am here to help you find the best vintage jewelry!

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  1. That’s good to know that you could get your size with a piece of string. I need to get wedding rings for my fiancee and me but I don’t know my size. I’ll have to try that out so I know what to look for when shopping.

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