Ring Size Calculator
Ring Size Calculator: Find Your Perfect Fit
Finding the right ring size can be tricky, especially when shopping online. Our Ring Size Calculator is here to help. Follow the instructions below to determine your ring size. This calculator gives results in US, UK, EU, and Japan ring sizes.
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How to Measure Your Ring Size
To find your ring size, you will need a piece of string or a strip of paper and a ruler.
- Wrap the string or paper around the base of your finger.
- Mark the point where the string or paper overlaps to form a complete circle.
- Measure the length of the string or paper from the end to the mark using a ruler.
- Enter the full circumference measurement in the calculator below.
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Most adult finger circumferences are usually between 49 mm and 63 mm, or about 1.93 inches to 2.48 inches.
Ring Size Calculator
Enter the circumference of your finger to estimate your ring size.
This ring size calculator uses finger circumference, not ring diameter. It provides an estimate only. For best accuracy, measure your finger at the end of the day and avoid measuring when your hands are very cold.
Example Ring Size Result
If your finger circumference is 55.7 mm, the calculator may show:
- US: 10
- UK: P 1/2
- EU: 55.7
- Japan: 20