Look up your ring size using our ring size conversion chart. Divide the circumference of your finger by 3.14 to find its diameter in mm (this is pi). This is the circumference of your finger. Measure the length of the section of string or paper between the pen mark and the end you first wrapped around your finger, in millimeters (mm).
![2.5 inch circle actual size 2.5 inch circle actual size](https://i.ytimg.com/vi/2f_EC5E_aEw/maxresdefault.jpg)
Use a pen to mark the point on the string or paper where it overlaps to form a complete circle. Wrap the string or paper around the base of your finger. Cut a strip of string or paper about 6” long and 1/4” wide. To measure your ring size using a string:ġ. If you are between sizes, always choose the larger size. The measurement in inches is your ring size. With your ruler, measure the string or paper against your finger. All you need is a string or a strip of paper and a ruler.
![2.5 inch circle actual size 2.5 inch circle actual size](https://etc.usf.edu/clipart/36500/36567/circle6_36567_sm.gif)
Measuring your ring size at home is easy and only takes a few minutes. Once you have this measurement, you can again consult a ring size chart to find out what ring size 2.5 inches is. Alternatively, you can wrap a string or strip of paper around your finger and then use a ruler to measure the length of the string or strip of paper. If you have a ring that is 2.5 inches in circumference, you can measure the inside diameter of the ring and then use a ring size chart to determine the corresponding ring size. When it comes to finding out what ring size 2.5 inches is, there are a few different ways that you can go about doing this. Trying to determine your ring size? Check out our blog post to find out what ring size 2.5 inches is!