SearchRing size chart: how to measure your ring size at home, and the average size for women
To find your ring size, wrap a paper strip around the base of the finger, mark where it meets, and read the length in millimeters against the chart below: 54.4 mm around the finger, or 17.3 mm across the inside of a ring that fits, is a US size 7. Each whole size adds about 0.8 mm across the inside, and between two sizes, take the larger one.
The short answer
- Your ring size comes down to millimeters. Around the finger, 52 mm is about a 6 and 57 mm about an 8.
- Each whole size adds about 0.8 mm across the inside; a half size, half that.
- The average ring size for women is about a 6.5. Two in three of the sizes buyers picked on our women's rings were 5.5 to 7.5.
- Men run larger: see our men's ring size guide.
Between two sizes? Send your strip reading in the live chat, or call or text 212-872-9692; a person answers from 10 AM ET.
Find your size on this screen
1Match the box to a bank card
2Lay a ring that fits on the circle
3Read your size
On a screen this is a guide, good to about a half size. For a ring you will wear every day, check it with the paper strip too.
Our team texts back 10 AM to 10 PM ET; later texts are answered the next day.
Women's Rings
All women's rings
On this page: The chart Measure at home Printable sizer Women's sizes Fit and resizing Questions
Ring size chart: US sizes 3 to 15 in millimeters
Around the finger is what your paper strip reads, and in most of Europe that number, rounded, is the size: a US 7 is about a 54.
| US size | Inside diameter (mm) | Around the finger (mm) | UK size, about | EU size, about | Around the finger (in) |
|---|---|---|---|---|---|
| 3 | 14.1 | 44.2 | F½ | 44 | 1.74 |
| 3.5 | 14.5 | 45.5 | G½ | 45 | 1.79 |
| 4 | 14.9 | 46.8 | H½ | 47 | 1.84 |
| 4.5 | 15.3 | 48.0 | I½ | 48 | 1.89 |
| 5 | 15.7 | 49.3 | J½ | 49 | 1.94 |
| 5.5 | 16.1 | 50.6 | K½ | 51 | 1.99 |
| 6 | 16.5 | 51.9 | L½ | 52 | 2.04 |
| 6.5 | 16.9 | 53.1 | M½ | 53 | 2.09 |
| 7 | 17.3 | 54.4 | N½ | 54 | 2.14 |
| 7.5 | 17.7 | 55.7 | O½ | 56 | 2.19 |
| 8 | 18.1 | 57.0 | P½ | 57 | 2.24 |
| 8.5 | 18.5 | 58.2 | Q½ | 58 | 2.29 |
| 9 | 18.9 | 59.5 | R½ | 60 | 2.34 |
| 9.5 | 19.4 | 60.8 | S½ | 61 | 2.39 |
| 10 | 19.8 | 62.1 | T½ | 62 | 2.44 |
| 10.5 | 20.2 | 63.3 | U½ | 63 | 2.49 |
| 11 | 20.6 | 64.6 | V½ | 65 | 2.54 |
| 11.5 | 21.0 | 65.9 | W½ | 66 | 2.59 |
| 12 | 21.4 | 67.2 | X½ | 67 | 2.64 |
| 12.5 | 21.8 | 68.5 | Y½ | 68 | 2.70 |
| 13 | 22.2 | 69.7 | Z½ | 70 | 2.75 |
| 13.5 | 22.6 | 71.0 | past Z: ask us | 71 | 2.80 |
| 14 | 23.0 | 72.3 | 72 | 2.85 | |
| 14.5 | 23.4 | 73.6 | 74 | 2.90 | |
| 15 | 23.8 | 74.8 | 75 | 2.95 |
Millimeters are rounded to a tenth; UK charts differ by up to a half size. Our listings use US sizes.
How to measure your ring size at home
You need a paper strip about a quarter inch wide, a fine pen and a ruler that reads millimeters.
- Measure at the end of the day. Fingers swell with heat and shrink with cold, so a cold morning reads small.
- Wrap the strip snug around the base of the finger the ring is for, and mark where the end meets it.
- Lay it flat on the ruler and read the millimeters to your mark.
- Find that number in the chart's around-the-finger column, or divide it by 3.14 for the inside diameter: 54 mm is about 17.2 mm across, a size 7.
- Check the knuckle. If it reads bigger than the base, lean toward the bigger number.
- Measure twice, on two days if you can, and take the larger reading.
With a ring that already fits, measure straight across the inside, edge to edge, and read the chart's diameter column. It has to be the same finger on the same hand: the two hands can run about a half size apart.
On a screen, use the sizer on this page: a bank card sets your screen to scale, and after that it is good to about a half size. Screens and printers vary, so for a ring worn every day, check the size on a ring that fits or at the store.
Printable ring sizer
Print at 100 percent, then check a bank card fits the box before you measure.
Download the printable ring sizer (PDF, one page)
Print this page at 100 percent and check that the bar measures 50 mm. Lay a ring that fits on the circles: your size is the circle whose outer edge just meets the inside of the ring, and between two, you are the half size.
Each circle's outer edge is the inside diameter of its US size, true to size only when printed at 100 percent.
The average ring size for women
About a 6.5, from the women's rings we sold in the twelve months to September 25, 2026, counting only rings where the buyer changed the size from the one the page opens on. The middle pick was a 6.5, a 7 was picked most, then a 6, and about one in three picks was a half size.
Sizes buyers picked on women's rings, share of picks
Buying for her without asking? Borrow a ring she wears on the same finger and measure across the inside.
About three in four of our women's ring listings offer every half size from 5 to 8; for a size off the list, ask the desk. Shop women's rings, engagement rings and wedding rings.
Men's sizes, the pinky and wide bands are in our men's ring size guide. Shop men's rings, wedding bands and pinky rings.
Four rings people size most, from our case: a thin band, an eternity band that is sized once, a men's band and a pinky ring. Each listing shows its own size list.
How a ring should fit
It goes over the knuckle with a little push and comes off with a little twist; a deep dent means too tight. A wide band fits tighter, so in the trade's experience go up about a half size. Measure the pinky itself, and size for an ordinary warm day.
Can a ring be resized later? A plain band or a solitaire usually can be sized up or down a little. A ring set with stones all the way around, an eternity band, usually cannot, so size it right the first time. Ask the desk about the ring you like before you order, or bring a piece to the store: our showroom page says to ask about a resize or a repair there, and to bring the piece in.
Settle the size before you order. From our showroom page: "Resizing and other alterations are done for you and are not returnable." For the finger and the hand, see which hand a wedding ring goes on.
From the store
“Buy jewelry you fall in love with: something that makes you happy every time you put it on, a reward for your hard work. And it has to be right, and it has to fit right. Otherwise there is no point.”
Chat, text or call
Send us your strip reading and the ring you like.
The live chat answers at night too; calls and texts are answered from 10 AM ET.
Ring size questions
What is the average ring size for women?
About a 6.5: the middle of the sizes buyers picked on our women's rings, with two in three from 5.5 to 7.5.
How do I measure my ring size with a string?
Wrap it snug around the base of the finger, mark where it meets, and read the millimeters against the chart. String can stretch, so paper reads truer.
What is my ring size in UK or European sizes?
In most of Europe the size is the millimeters around the finger, rounded: a US 7 is about a 54. In the UK a US 7 is about an N½. Charts differ by up to a half size, so tell the desk your size and where it came from.
Should I size up or down between two sizes?
The larger one, and about a half size up for a wide band. A ring a touch big still goes over the knuckle; a tight one may not.
How do I find my ring size without a ring sizer?
Wrap a strip of paper snug around the base of the finger, mark where the end meets it, and measure the strip flat in millimeters. Find that number in the chart's around-the-finger column: 54.4 mm is a 7. Or measure across the inside of a ring that fits the same finger.
What size is a 7 in ring size?
A US 7 is 17.3 mm across the inside and 54.4 mm around the finger: about an N½ in the UK and a 54 in most of Europe.
Can my phone measure my ring size?
As a guide, yes. The sizer on this page sets your screen to scale against a bank card and then reads a ring's inside to about a half size. For a ring worn every day, confirm it with a paper strip or a ring that fits.
Can a ring be resized?
Plain bands and solitaires usually can, a little; eternity bands set all the way around usually cannot. Resizing and other alterations are done for you and are not returnable, so settle the size first, and ask the desk about the ring you want.
Keep reading
More answers from the store: all TraxNYC buyer's guides.
Come to 47th Street, or ask the desk
We are at 64 W 47th St, Booth F-1, New York, NY 10036, on 47th Street since 2004. Monday to Friday 11 am to 6 pm ET, Saturday and Sunday 12 pm to 4 pm ET; around a holiday, text first. Start a live chat, or call or text 212-872-9692 from 10 AM ET, and read our showroom page before you come.
