Fitting guide

Find your ring size

Measure at home in a minute. Tell the screen how big it is by holding a bank card or a coin against it, then match a ring you already wear — or a strip of paper wrapped around the finger — and read your size in Australian, US and European scales.

Step one

Check the screen

We have estimated your screen from the device you are on, so this is usually right already. Hold a bank card flat against the outline below to check — if the two match, carry on to step two.

Lay the card flat on the screen, lined up with the dashed outline, and drag the slider until the outline disappears behind it.

Any bank, licence or Medicare card, held on its side. Needs a screen wider than about 90 mm.

The outline is standing in for 85.6 mm. This is our estimate — adjust it only if it does not match.

Step two

Measure

We want the distance straight across the inside of the band — not the outside, and not the width of the metal.

  1. Pick a ring worn on the same finger you have in mind — sizes differ from finger to finger, and between hands.
  2. Rest it flat on the screen, over the circle.
  3. Adjust until the circle sits exactly inside the band, touching the inside edge all the way round.
Inner diameter
17.35 mm
Around the finger
54.5 mm

Australia / UK

N½

United States

7

Europe

55

Nearest listed size, which is 17.35 mm across. Between two sizes, take the larger — a ring that will not pass the knuckle is no use, and a loose one can be brought in.

The full range

Inner diameter and the distance around the finger, against each national scale.
DiameterAround the fingerAU / UKUSEU
14.05 mm44.1 mmF½344
14.45 mm45.4 mmG½3½45
14.86 mm46.7 mmH½447
15.27 mm48.0 mmI½4½48
15.70 mm49.3 mmJ½549
16.10 mm50.6 mmK½5½51
16.51 mm51.9 mmL½652
16.92 mm53.2 mmM½6½53
17.35 mm54.5 mmN½755
17.75 mm55.8 mmO½7½56
18.19 mm57.1 mmP½857
18.53 mm58.2 mmQ½8½58
18.95 mm59.5 mmR½960
19.41 mm61.0 mmS½9½61
19.84 mm62.3 mmT½1062
20.24 mm63.6 mmU½10½64
20.68 mm65.0 mmV½1165
21.08 mm66.2 mmW½11½66
21.49 mm67.5 mmX½1268
21.89 mm68.8 mmY12½69
22.33 mm70.2 mmZ1370

Getting an honest measurement

  • Measure late in the day

    Fingers swell as the day goes on. A size taken in the morning can be half a size small by evening.

  • Warm hands read true

    Cold shrinks a finger noticeably. If you have just come in from outside, wait a few minutes.

  • Wide bands sit tighter

    A band over 6 mm needs roughly a quarter to half a size more room than a fine one.

  • Size to the knuckle

    If your knuckle is broader than the base of your finger, the ring has to pass the knuckle first.

  • Measure the finger it is for

    Sizes differ from finger to finger and between hands. The right hand is usually slightly larger on right-handed people.

  • Between two sizes, take the larger

    A ring that will not pass the knuckle is no use. A slightly loose one can be brought in.

Common questions

How do I measure my ring size at home?
Two ways. If you own a ring that fits the right finger, lay it on the circle above and match the circle to the inside of the band — that measures the inner diameter. If you do not, wrap a strip of paper around the base of the finger, mark where it overlaps, and lay it along the on-screen ruler, which measures the distance around. Either measurement converts to a size.
How do I find my ring size without a ring?
Wrap a strip of paper, a length of thread or a tape measure around the base of the finger, snug but not tight. Mark where the end meets itself, lay it flat against the ruler on this page, and read the length. That length is the inner circumference, and dividing it by pi gives the diameter the ring needs.
What is the average ring size in Australia?
For women it is commonly around a size N, about 17.3 mm across the inside. For men it is commonly around a size T, about 19.8 mm. They are averages rather than a substitute for measuring — fingers vary far more than the averages suggest.
What ring size is 17 mm?
A 17 mm inner diameter is roughly an Australian and UK size M half, a US size 6 and a half, and a European 53. The full conversion table on this page lists every size with its diameter and circumference.
Is my ring size the same on both hands?
Usually not. The dominant hand tends to be slightly larger, often by a quarter to a half size, and every finger differs. Measure the finger the ring is actually for.
Does the width of the band change the size I need?
Yes. A wide band sits against more of the finger and feels tighter, so a band over about 6 mm usually needs a quarter to half a size more room than a fine one.

Before you decide

Buying without giving it away

Borrow a ring they already wear, and note which finger it comes from — a ring from the right hand is often a size out for the left. Measure it here, or bring it to us and we will size it on a mandrel in a minute.

Failing that, someone close to them usually knows. If it has to be a guess, tell us: we would rather build a little room into the design than have you guess at the number.

Can a ring be resized later?

Usually, yes. Gold, platinum and silver bands can be taken in or let out, and a size or two either way is routine work.

Some cannot. Titanium and tungsten are too hard to work. A band set with stones all the way round has nowhere to cut, and a ring with a wide patterned band can lose the pattern if it moves far. Those are worth getting right the first time, which is the honest reason to be measured properly rather than trust a screen.

Rather be measured properly?

A screen will get you close, and close is enough to start a conversation. For a ring being made to keep, come to the Moonee Ponds studio and we will size your finger on a proper mandrel — no appointment needed, and no obligation.