Tips for an accurate measurement
Measure at the end of the day, when your hands are warm and at their largest — cold fingers can be up to half a size smaller. Take the measurement two or three times, and if a ring will have a wide band, size up slightly, as wider bands fit more snugly. For a surprise gift, borrow a ring the recipient already wears on the correct finger and measure its inside diameter.
Want the full walkthrough? Read our guide on how to measure your ring size at home, and if a ring ever needs adjusting, see how ring resizing works.
Frequently Asked Questions
How do I measure my ring size at home?
There are two reliable ways. If you already own a ring that fits, measure its inside diameter in millimetres and enter it above. If not, wrap a strip of paper or string around the base of your finger, mark where it overlaps, measure that length in millimetres, and enter it as your circumference. Avoid on-screen sizing tools — screens vary, so physical measurement is far more accurate.
What is the most common ring size?
For women, the most common sizes are US 6 to 7; for men, US 9 to 10.5. That said, fingers vary widely, so it is always best to measure rather than guess — especially for a surprise gift.
Should I size up for wide bands?
Yes. Wide or chunky bands (6mm and up) sit more snugly, so it is common to go up a quarter or half size compared with a thin band. If you are between sizes, sizing up is usually the safer choice.
When is the best time to measure my finger?
Measure at the end of the day when your hands are warm and at their largest, and avoid measuring when you are cold, as fingers can shrink noticeably. Take the measurement two or three times to be sure.
What if I am between two ring sizes?
Choose the larger size — a ring that is slightly loose is far more comfortable and safer than one that is too tight to remove. You can always have a ring professionally resized if needed.