Ring Size Guide
This calculator computes your ring size from finger circumference.
- Free, no sign-up, works on any device.
- Instant results with a clear explanation of each step.
Figures are estimates from this calculator’s standard formula — adjust the inputs in the tool below for your exact number.
How Does the Ring Size Guide Work?
The Ring Size Guide allows you to perform calculations quickly and easily. Simply enter the required values and click the calculate button to get instant results.
- 1
Enter Values
Provide your values in the fields shown.
- 2
Adjust Settings
Adjust the options and values as needed.
- 3
View Results
Click the "Calculate" button to see the result instantly.
FAQs
How accurate is this calculator?
Can I use it repeatedly?
Ring Size From What You Can Measure
A paper strip, an existing ring, or calipers — US, UK and ISO sizes that agree.
Your measurementPaper strip: wrap the finger and measure the length. Existing ring: measure the INNER diameter.
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