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Puzzle Ring Size Chart: MM, Inches, US, UK & EU Sizes + Free PDF


Puzzle Ring Size Chart: Sizes in MM, Inches, US, UK & EU

A puzzle ring size chart converts your finger measurement into a ring size. Puzzle rings use the same US, UK and EU sizes as other rings, but they are made of several interlocking bands that stack into one wide ring, so they can feel tighter than a plain band of the same size. Use the chart below to find your size, then read the fit tips for men’s and women’s puzzle rings.

Quick answer: a US size 7 puzzle ring has an inner diameter of 17.32 mm (0.682 in) and an inner circumference of 54.4 mm, which is UK N½ and EU 54. Measure your finger in mm, match it to the chart, and consider a quarter to a half size more if the puzzle ring is wide.
Get the printable puzzle ring size chartFree A4 PDF with a 100% print-scale check. No sign-up needed.

Download the Puzzle Ring Size Chart PDF

How Puzzle Rings Are Sized

A puzzle ring is made of several thin bands, often three or four, that interlock to form a single ring. It is often called a Turkish puzzle ring, and it is traditionally linked to Turkey. When the ring is taken off, the bands can come apart, and putting them back together can be tricky. Like any other ring, it is sized by the inside diameter or circumference of the finished ring. The ISO 8653 standard defines ring size by inside circumference in millimetres; see the ring size overview for background.

What makes puzzle rings different is the build. The stacked bands make the finished ring wider than a plain band, so a ring that matches your measurement on paper can still feel snug across its width or at the knuckle. Because the bands rely on the finger to hold them together, getting the size right before you buy matters more than usual.

Puzzle Ring Size Conversion Chart (MM, Inches, US, UK, EU)

Inner diameter is the width across the inside of the band. Inner circumference is the distance around it. Highlighted rows are common reference points.

Puzzle ring size conversion chart, US sizes 3 to 13
Ring size (US) Inner diameter (mm) Inner diameter (in) Inner circumference (mm) US UK EU
3 14.07 0.554 44.2 3 F 44
3.5 14.47 0.570 45.5 3.5 G 45
4 14.88 0.586 46.8 4 H 47
4.5 15.29 0.602 48.0 4.5 I 48
5 15.69 0.618 49.3 5 J½ 49
5.5 16.10 0.634 50.6 5.5 K½ 51
6 16.51 0.650 51.9 6 L½ 52
6.5 16.91 0.666 53.1 6.5 M½ 53
7 17.32 0.682 54.4 7 N½ 54
7.5 17.73 0.698 55.7 7.5 O½ 56
8 18.13 0.714 57.0 8 P½ 57
8.5 18.54 0.730 58.2 8.5 Q½ 58
9 18.95 0.746 59.5 9 R½ 60
9.5 19.35 0.762 60.8 9.5 S½ 61
10 19.76 0.778 62.1 10 T½ 62
10.5 20.16 0.794 63.3 10.5 U½ 63
11 20.57 0.810 64.6 11 V½ 65
11.5 20.98 0.826 65.9 11.5 W½ 66
12 21.38 0.842 67.2 12 X½ 67
12.5 21.79 0.858 68.5 12.5 Z 68
13 22.20 0.874 69.7 13 Z½ 70

Formulas used: circumference = π × diameter; inches = mm ÷ 25.4; EU size = inner circumference in mm, rounded. UK letters are matched to the nearest published inner diameter. Sizes vary slightly by brand.

Puzzle Rings vs Single Bands: Should You Size Up?

Single band versus puzzle ringOn the left a single narrow band sits lightly on a finger; on the right a puzzle ring made of several stacked bands covers more of the finger and may fit tighter, so a quarter to half size up may be needed. Single narrow bandLight contactTrue size usually fits Puzzle ringSeveral stacked bandsConsider a size up
A puzzle ring is a stack of interlocking bands that often covers more of the finger than a single narrow band, so it can feel tighter in the same size.

A stack of interlocking bands has more contact with the skin and can be harder to slide over the knuckle. If you are between sizes, or the puzzle ring is wide, many people choose a quarter to a half size larger. A ring that is too loose may slip off and fall apart, while one that is too tight can be uncomfortable, so check the seller’s size notes and return policy, because the width and construction differ from maker to maker.

Puzzle ring styles and fit
Style Typical build Fit tip
Three-band puzzle ring Three interlocking bands, narrower overall True size often fits; check the knuckle
Four-band or wider puzzle ring Four or more bands, broader and heavier Consider a quarter to half size up if between sizes
Decorated or stone-set puzzle ring Patterned bands or small stones Confirm size notes, as thickness varies by maker

Women’s Puzzle Ring Sizes

Women’s puzzle rings are most often worn on the ring finger, commonly between about US 5 and US 9, though many people fall outside that range. See also the women’s ring size chart.

Women’s puzzle ring sizes: US 5 to 9
Ring size (US) Inner diameter (mm) Inner diameter (in) Inner circumference (mm) US UK EU
5 15.69 0.618 49.3 5 J½ 49
5.5 16.10 0.634 50.6 5.5 K½ 51
6 16.51 0.650 51.9 6 L½ 52
6.5 16.91 0.666 53.1 6.5 M½ 53
7 17.32 0.682 54.4 7 N½ 54
7.5 17.73 0.698 55.7 7.5 O½ 56
8 18.13 0.714 57.0 8 P½ 57
8.5 18.54 0.730 58.2 8.5 Q½ 58
9 18.95 0.746 59.5 9 R½ 60

Men’s Puzzle Ring Sizes

Puzzle rings are popular as men’s rings and are commonly bought in sizes from about US 8 to US 13. Wide puzzle rings can feel tighter, so consider a quarter to a half size more if you are between sizes. See also the men’s ring size chart.

Men’s puzzle ring sizes: US 8 to 13
Ring size (US) Inner diameter (mm) Inner diameter (in) Inner circumference (mm) US UK EU
8 18.13 0.714 57.0 8 P½ 57
8.5 18.54 0.730 58.2 8.5 Q½ 58
9 18.95 0.746 59.5 9 R½ 60
9.5 19.35 0.762 60.8 9.5 S½ 61
10 19.76 0.778 62.1 10 T½ 62
10.5 20.16 0.794 63.3 10.5 U½ 63
11 20.57 0.810 64.6 11 V½ 65
11.5 20.98 0.826 65.9 11.5 W½ 66
12 21.38 0.842 67.2 12 X½ 67
12.5 21.79 0.858 68.5 12.5 Z 68
13 22.20 0.874 69.7 13 Z½ 70

How to Measure Puzzle Ring Size in MM and Inches

Millimetres are the most accurate unit. Convert to inches by dividing by 25.4. Our how to measure your ring size guide and the ring size calculator cover more methods.

Measure an Existing Ring

Measuring the inner diameter of a puzzle ringA puzzle ring made of interlocking bands seen from above, with a horizontal line across the inside edge to edge labelled inner diameter. Inner diameter 1. Measure the insideof the ring, notwith the bands assembled. 2. Read it in mm.Inches = mm ÷ 25.4Example: 16.51 mm = 0.650 in
Measure the inside of the ring edge to edge, with the bands assembled.
  1. Choose a ring that fits the same finger comfortably.
  2. Lay it flat and measure the inside width at its widest point, in mm.
  3. Find the nearest value in the “Inner diameter (mm)” column.
  4. Multiply the diameter by 3.1416 to check the circumference.

Measure Finger Circumference with a Paper Strip

Measuring finger circumference with a paper stripA paper strip wrapped around a finger with a pen mark where the end overlaps, then laid flat against a ruler. 1. Wrap and mark 0mmmm Length 0 to mark = circumference 2. Lay flat and measure in mm
Wrap, mark, then measure the strip against a ruler.
  1. Cut a strip of paper about 10 mm wide and 150 mm long.
  2. Wrap it around the base of the finger you will wear the ring on and mark where it overlaps.
  3. Lay the strip flat and measure from the end to the mark in mm.
  4. Match the result to the “Inner circumference (mm)” column. Use string or a tape measure the same way.
Tip: measure at the end of the day when fingers are warm, and repeat three times. If your knuckle is larger than the base of your finger, choose a size that passes the knuckle.
Print the chart and check your sizeFree A4 PDF with a 100% print-scale check. No sign-up needed.

Download the Puzzle Ring Size Chart PDF

How to Choose the Right Puzzle Ring Size

  • Pick the finger first. Measure the finger you will actually wear the ring on.
  • Use millimetres. Compare your circumference with the chart and the seller’s size notes.
  • Check the band width and the number of bands. Wide puzzle rings can feel tighter; go up a quarter to a half size if between sizes.
  • Check the knuckle. The ring must pass over it and still sit snugly, so the bands stay together.
  • Test the fit. It should not slip off when your hand is relaxed, and the bands should stay together.

Can Puzzle Rings Be Resized?

Often not easily, so ask the seller or a jeweller before you buy or alter one. A puzzle ring is made of several interlocking bands, and cutting or stretching one band can stop them fitting together. Many makers prefer to remake the ring in a new size, and some offer exchanges instead. Related guides: US ring size chart, UK ring size chart and ring size conversion chart.

Puzzle Ring Size FAQs

What size is a puzzle ring?

There is no single puzzle ring size. Puzzle rings are made in the same US, UK and EU sizes as other rings, so the size you need depends on your finger. Measure your finger in millimetres and match it to the chart on this page.

Do puzzle rings fit tighter than normal rings?

Often they can, because several stacked bands make the ring wider than a plain band. If you are between sizes, many people go up a quarter to a half size, but check the seller’s size notes.

Should I size up for a puzzle ring?

Often a quarter to a half size up is a sensible choice for a wide puzzle ring, because the extra width covers more of the finger. A narrow three-band ring may fit true to size. The seller’s size guide and return policy are worth checking.

Can a puzzle ring be resized?

Often not easily. The ring is made of several interlocking bands, and altering one band can stop them fitting together. Many makers prefer to remake or exchange the ring, so ask before you buy.

Why does a puzzle ring fall apart?

A puzzle ring is designed as separate interlocking bands, so it can come apart when it is taken off. It is usually held together by the finger, so a ring that is too loose may slip off and separate.

What size puzzle ring does a man usually wear?

Men’s puzzle rings are commonly bought between about US 8 and US 13, but the right size depends on the finger and the width of the ring. Measure the finger you will wear it on rather than relying on a typical size.

How do I measure my finger for a puzzle ring?

Wrap a strip of paper around the base of your finger, mark the overlap and measure the length in millimetres. Match that circumference to the chart. Measure at the end of the day and repeat three times.

Are puzzle ring sizes different from other ring sizes?

No. They use the same standard size scales as other rings. The difference is in the fit, because the wider multi-band build of many puzzle rings can feel tighter than a slim plain band in the same size.

Related Ring Size Guides

Download your free puzzle ring size chartFree A4 PDF with a 100% print-scale check. No sign-up needed.

Download the Puzzle Ring Size Chart PDF

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