Convert Circumference In Inches (in) to Diameter In Inches (in), Inner Diameter And Circumference Of A Ring

Ring size conversion page helps to convert jewelry ring sizes used around the globe. As you could probably expect, people use different scales to mark ring sizes in various parts of the world. This is not a problem though, our converter lets you instantly convert a ring size from any scale to all the others.

Ring sizes can be measured by inner diameter of a ring or by the length of the inner circumference of a ring.

Unlike many other ring conversion tables you can find on the web, we use formulas to calculate exact conversions based on official standards instead of providing a loose approximate matching. We want to make sure you get the most reliable conversion result.

For most systems we round up sizes to a quarter of a size step. If this rounding-up adds difference of more than 1%, we show the actual difference as a percent of the ring diameter. It may sound cumbersome, but it's easy. Just try it – enter any ring size and get it converted to all other sizes.

Circumference in inches (in)
Inner Diameter and Circumference of a Ring
Diameter in inches (in)
Inner Diameter and Circumference of a Ring

This page features online conversion from Circumference in inches to Diameter in inches. These units belong to the same measurement system: Inner Diameter And Circumference Of A Ring.

If you need to convert other units, please start with the home page. You can also switch to the converter for Diameter in inches to Circumference in inches.

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Does convert-me.com really exist since 1996? In fact it's even older. We launched the first version of our online units converter in 1995. There was no JavaScript there and all conversions had to be done on server. The service was slow. A year later the technology allowed us to create an instant units conversion service that became the prototype of what you see now.
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? Inner diameter or circumference should be more than zero ? Not a valid Wheat Sheaf ring size ? Not a valid ring size, sorry. ? Not a valid Northern American ring size

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