Buying a ring online, for yourself or as a gift, means knowing the exact size. Good news: there are several simple ways to figure it out without going to a jeweler.
The String Method
Wrap a thin piece of string or paper around the base of the finger, mark where the two ends meet, then measure that length with a ruler. This measurement in millimeters is the circumference of the finger, which you can then match to a ring size using a size chart.
Use a Ring That Already Fits
If you already have a ring that fits the person well, measure its inside diameter (the hole) with a ruler, in millimeters. This is often the most reliable method, as long as you pick a ring worn on the same finger.
A Few Size Benchmarks
French ring sizes usually range from 48 to 62 (about US 4.5 to US 10). As a guide, a French size 50 (about US 5.25) corresponds to an inside diameter of about 15.9 mm, and a size 56 (about US 7.75) to about 17.8 mm. If you're between two sizes, it's better to size up: a ring that's too big is easier to tighten than a ring that's too small is to enlarge.
For a Surprise Gift
It's hard to ask for someone's ring size without raising suspicion! A few tricks: discreetly borrow a ring she wears every day on the right finger, or check the size of someone close to you with a similar hand shape.
Good to Know
- Finger size can vary slightly with temperature (fingers swell a little in the heat).
- Measure at the end of the day if possible, when your fingers are slightly larger.
- If you're torn between two close sizes, a jeweler can resize some rings after purchase.
Found your size? Learn how to choose your ring style and which finger to wear it on in our guide to women's rings.
Once you know your size, browse our selection of rings to find the one for you. Our rings are shipped from Aix-en-Provence, France, with free shipping to the USA, and if the size isn't right, you have 15 days to return it.
