Size guide
Ring sizes in Iran follow the European ISO standard: the size number is the inner circumference in millimetres. Size 54 means 54 mm around the inside, about 17.2 mm across.
Measure your ring size on this screen
All you need is a bank card and a ring that fits. The screen is set up once and remembered in this browser.
-
Set the screen scale with a bank card
Hold a bank card on the box and move the slider until the box is exactly the size of the card.
Hold a bank card here -
Put a ring on the circle
Lay a ring on the screen and resize the circle until its edge sits on the inner edge of the ring.
About half a size accurate. Go one size up for a wide band, and the bigger size if you are between two.
Ring size calculator
Enter the inner diameter of a ring that fits, or your finger's circumference, in millimetres.
Ring size chart
Iran and Europe (ISO) size = inner circumference in mm. Italian size = the same number minus 40 (54 → 14). Common sizes: women 48–56, men 58–66.
| Iran / EU size | Inner circumference (mm) | Inner diameter (mm) | US | Italy |
|---|---|---|---|---|
| 44 | 44 | 14.0 | 3 | 4 |
| 45 | 45 | 14.3 | 3¼ | 5 |
| 46 | 46 | 14.6 | 3¾ | 6 |
| 47 | 47 | 15.0 | 4 | 7 |
| 48 | 48 | 15.3 | 4½ | 8 |
| 49 | 49 | 15.6 | 5 | 9 |
| 50 | 50 | 15.9 | 5¼ | 10 |
| 51 | 51 | 16.2 | 5¾ | 11 |
| 52 | 52 | 16.6 | 6 | 12 |
| 53 | 53 | 16.9 | 6½ | 13 |
| 54 | 54 | 17.2 | 6¾ | 14 |
| 55 | 55 | 17.5 | 7¼ | 15 |
| 56 | 56 | 17.8 | 7¾ | 16 |
| 57 | 57 | 18.1 | 8 | 17 |
| 58 | 58 | 18.5 | 8½ | 18 |
| 59 | 59 | 18.8 | 8¾ | 19 |
| 60 | 60 | 19.1 | 9¼ | 20 |
| 61 | 61 | 19.4 | 9½ | 21 |
| 62 | 62 | 19.7 | 10 | 22 |
| 63 | 63 | 20.1 | 10½ | 23 |
| 64 | 64 | 20.4 | 10¾ | 24 |
| 65 | 65 | 20.7 | 11¼ | 25 |
| 66 | 66 | 21.0 | 11½ | 26 |
| 67 | 67 | 21.3 | 12 | 27 |
| 68 | 68 | 21.6 | 12¼ | 28 |
| 69 | 69 | 22.0 | 12¾ | 29 |
| 70 | 70 | 22.3 | 13¼ | 30 |
Bangle sizes
Bangles are sized by inner diameter. A closed bangle has to pass over the widest part of the hand (the knuckles, thumb tucked in), so measure the hand, not the wrist.
| Inner diameter (mm) | Inner circumference (mm) | Indian size | Fits |
|---|---|---|---|
| 54.0 | 169.6 | 2-2 | Very slim hand / teen |
| 57.2 | 179.5 | 2-4 | Slim |
| 60.3 | 189.5 | 2-6 | Average (most common) |
| 63.5 | 199.5 | 2-8 | Large |
| 66.7 | 209.5 | 2-10 | Very large |
| 69.9 | 219.4 | 2-12 | Men / extra large |
Bracelet lengths
Measure round the wrist just above the wrist bone and add 1.5–2 cm for a chain bracelet; 1 cm is enough for a snug fit.
| Wrist (cm) | Bracelet length (cm) | Size |
|---|---|---|
| 14 | 15.5–16 | Extra small |
| 15 | 16.5–17 | Small |
| 16 | 17.5–18 | Small |
| 17 | 18.5–19 | Medium |
| 18 | 19.5–20 | Large |
| 19 | 20.5–21 | Large |
| 20 | 21.5–22 | Extra large |
Chain and necklace lengths
Lengths are for an average neck; on a wider neck a chain sits a little higher. Go one length up for a heavy pendant.
| Length (cm) | Where it sits |
|---|---|
| 35–38 | Close round the neck (choker) |
| 40–42 | Base of the neck — common for children and fine chains |
| 45 | On the collarbone — the standard women's length |
| 50 | Just below the collarbone — common for pendants and men's chains |
| 55 | Above a shirt's neckline — common for men |
| 60 | At or just below the neckline |
| 70–90 | Down to the chest (long chain) |
Measuring at home
String or paper strip
- Wrap a non-stretchy string or a thin strip of paper round the base of the finger.
- Mark where the ends meet — snug, not tight.
- Unwrap it and read the length to the mark in millimetres. That is the circumference, and your size.
- The ring must also pass the knuckle; if yours is wide, go half a size up.
A ring that already fits
- Lay a ring that fits the same finger on a ruler.
- Read the distance between the inside edges at the widest point: that is the inner diameter.
- Enter it in the calculator above, or multiply by 3.14 for the circumference and size.
Tips
- Measure at the end of the day at room temperature; fingers are thinner in the morning and in the cold.
- For a wide band (over 6 mm) go half to one size up.
- One size is 1 mm of circumference, only about 0.3 mm of diameter — measure carefully.
- Left and right hands often differ; measure the finger the ring is for.
Tolerance and 3D files
In making and casting, about half a millimetre of circumference (half a size) either way is normal, and metal shrinks slightly as it cools. For 3D files the model's size is in the Specifications section of the product page; that is the outer size of the whole model, not the inner diameter. Check the file's description for the ring size or ask the seller; most designers can resize a file.