Guess wrong and you're waiting on an exchange instead of wearing it. 2 minutes of measuring is all it takes — no store visit required.
2 ways to find your ring size
Use whichever one you can do right now: measure the finger directly, or measure a ring you already own that fits that same finger.
Measure your finger
- Wrap a strip of string or paper around the base of the finger you'll wear the ring on.
- Mark where it overlaps itself, then lay the strip flat against a ruler.
- Match that length — the circumference — against the chart below.
Measure a ring you own
- Pick a ring that already fits comfortably on the finger you're buying for.
- Measure the inside diameter: straight across the inner circle, not around it.
- Match that number against the diameter chart below.
| Circumference | Ring size |
|---|---|
| 4.9cm | 4 |
| 5.1cm | 5 |
| 5.4cm | 6 |
| 5.6cm | 7 |
| 5.9cm | 8 |
| 6.1cm | 9 |
| 6.4cm | 10 |
| 6.7cm | 11 |
| 6.9cm | 12 |
| Diameter | Ring size |
|---|---|
| 1.5cm | 5 |
| 1.6cm | 6 |
| 1.7cm | 7 |
| 1.8cm | 8 |
| 1.9cm | 9 |
| 2cm | 10 |
| 2.1cm | 11 |
| 2.2cm | 12 |
| 2.3cm | 13 |
Measurements may vary by ± 0.1cm depending on the design.
Size finder
Tap the circumference closest to what you measured.
What the ring itself changes
The same finger doesn't take the same size in every design. Band width and profile both affect how a ring feels once it's on.
6mm and up
A wide band covers more of the finger and grips more of it, so it reads tighter than a thin one at the same size. Consider going a half to a full size up — and if you're already between sizes, take the larger.
1–3mm
Thin bands sit close to your measured size. They also slip over the knuckle more easily, so a size that feels only just snug is usually the right one.
Two or three thin bands worn together behave a little like one wide band. Size the stack as a group rather than sizing each ring on its own.
A raised moissanite or solitaire setting shifts weight to the top of the finger. Aim for a true fit, not a loose one, so the stone stays facing up through the day.
A few things that throw sizing off
Measure later in the day
Fingers swell slightly with heat and activity. An afternoon or evening measurement, when hands run a little warmer, reflects your everyday size better than a cold morning one.
Measure the exact one
Size varies finger to finger and between hands. Always measure the specific finger the ring is meant for, not whichever one is convenient.
Go with the larger one. Slightly loose is a minor annoyance; too tight is uncomfortable, and hard to remove.
Buying a ring as a surprise
If you can borrow a ring they already wear on the intended finger — even for a minute — measure it using Method 02 above. No access to one? Asking a close friend or family member if they know the size is far more reliable than guessing outright.
Get the fit right the first time.
Frequently asked questions
How do I find my ring size at home?
Wrap a piece of string or paper around the base of your finger, mark where it overlaps, then measure that length against a ring size chart. Alternatively, measure the inside diameter of a ring you already own that fits the same finger.
What if my ring size is between two sizes?
Choose the larger of the two sizes. A slightly loose ring is a minor inconvenience, while a ring that's too tight can be uncomfortable or difficult to remove.
Does a wide band need a bigger size?
Usually, yes. A wider band sits against more of your finger and feels tighter than a thin band in the same size, so for bands 6mm and up it's worth going a half to a full size up.
Does ring size change between fingers?
Yes — ring size varies from finger to finger and even between your left and right hand. Always measure the specific finger you intend to wear the ring on rather than assuming it matches another finger.
What time of day is best to measure ring size?
Later in the day, such as afternoon or evening, tends to give a more accurate everyday size, since fingers can be slightly smaller in the cold or first thing in the morning and swell a little with warmth and activity.
Can titanium and stainless steel rings be resized?
Generally, titanium and stainless steel are too hard to resize the way softer metals like sterling silver can be, which makes getting an accurate size upfront especially important for these materials. Confirm resizing options for a specific piece before ordering if you're unsure.
How do I find a ring size for someone else as a surprise?
Borrow a ring they already wear on the intended finger and measure its inside diameter, or ask a close friend or family member if they know the size. Both are more reliable than estimating.
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