To measure your ring size at home, wrap a string or thin paper strip around the base of your finger, mark where it overlaps, and measure that length in mm. Or measure the inside diameter of a ring that already fits. Compare the result to a ring size chart.
No jeweler nearby? These simple methods use things you already have at home, and a few habits make the reading more accurate.
3 Ways to Measure Your Ring Size at Home
1. The string method
Wrap a piece of string around the base of your finger. Mark where it overlaps. Lay it flat on a ruler, measure the length in mm and compare it to a ring size chart.
2. The paper strip method
Cut a thin strip of paper about 10mm wide. Wrap it around your finger without pulling too tight, mark the overlap, then measure it in mm.
3. The existing ring method
Place a ring that fits well on a ruler. Measure the inside diameter in mm. As a guide, 16mm = size 5.5, 17mm = size 6.5, 18mm = size 8.
Which Method Should You Use?
| Method | What you need | What you measure |
|---|---|---|
| String | String, pen, ruler | Length around your finger in mm |
| Paper strip | Thin paper strip about 10mm wide, pen, ruler | Length around your finger in mm |
| Existing ring | A ring that fits well, ruler | Inside diameter of the ring in mm |
Tips for an Accurate Reading
Measure at the right time
Fingers swell in heat and shrink in cold. Measure in the afternoon at room temperature for the most accurate reading.
When in doubt, go slightly larger
A ring that is slightly too big can be worn with a ring adjuster. A ring that is too small cannot be worn at all.
“My sister loved it. The last photo of her and my father made her birthday so special. Its a beautiful gift for someone making it a beautiful memory.”
Oak S., verified buyer of the Double Name Adjustable Ring, June 2023
Start Simple
Pick one piece that speaks to you, wear it for a week, and see how it fits your everyday life. The best ring is the one you never want to take off.
Frequently Asked Questions
How can I measure my ring size without a tape measure?
Use a piece of string or a thin strip of paper about 10mm wide. Wrap it around the base of your finger, mark the overlap, then lay it flat against a ruler and read the length in mm. Compare that number to a ring size chart.
How do I find my ring size using a ring I already own?
Place a ring that fits well on a ruler and measure its inside diameter in mm, edge to edge. As a guide, 16mm equals size 5.5, 17mm equals size 6.5, and 18mm equals size 8. This method works best when the ring is worn on the same finger.
What time of day is best to measure ring size?
Measure in the afternoon at room temperature. Fingers swell in heat and shrink in cold, so a reading taken on a very hot or very cold day can be off. Measure at least twice to confirm the same number.
What if my ring size is between two sizes?
Go slightly larger. A ring that is a little too big can still be worn with a ring adjuster, while a ring that is too small cannot be worn at all. Checking your measurement at room temperature in the afternoon also helps you avoid choosing the wrong size.
