A US size 5 ring has an inner diameter of 15.7 mm (0.62 inches) and an inner circumference of 49.3 mm. It is UK size J½, EU 49 and India/Japan 9. Size 5 is a petite women’s size. Check whether it fits by matching a ring on screen with the online ring sizer.
| US / Canada size | 5 |
|---|---|
| Inner diameter | 15.7 mm = 0.618 in |
| Inner circumference | 49.3 mm = 1.94 in |
| UK / Australia | J½ |
| EU / ISO / Germany | 49 |
| India / Japan / China | 9 |
| Switzerland | 9 |
| Half size smaller | US 4.5 (15.3 mm) |
| Half size larger | US 5.5 (16.1 mm) |
Is size 5 small?
Yes, size 5 is on the small side for adult women. The most common women’s sizes in the US and UK are 6 to 7, so a 5 is about one to two sizes below average. It is a typical size for:
- women with slender fingers or a petite build;
- the little finger or a midi ring position for women who wear size 6–7 on the ring finger;
- teenagers aged roughly 13–16;
- the pinky ring of many men.
How to check a size 5 at home
- Ring you own: measure the inside straight across. 15.5–15.9 mm is a size 5.
- Paper strip: wrap it around the base of the finger and measure the length. 48.7–49.9 mm means size 5.
- On screen: calibrate the ring sizer with a bank card, place the ring on the screen and read the size.
If your measurement is between 5 and 5.5, a thin band can be bought in size 5 and a wide band in 5.5.
Size 5 in other countries
In the UK, Australia and Ireland a US 5 is J½. In Germany, France and most of Europe it is size 49 (the circumference in mm) and in Switzerland 9. In India, Pakistan and Japan it is number 9. When ordering from a shop in another country, compare the inner diameter rather than the size label: 15.7 mm is the same everywhere.
Size 5 compared with neighbouring sizes
US 4.5 (15.3 mm) is the half size below, and US 5.5 (16.1 mm) the half size above. Each half size changes the diameter by 0.4 mm and the circumference by about 1.3 mm. That is a small difference on paper, but enough to make a ring either spin or stick at the knuckle, so it is worth measuring carefully rather than guessing.
Tips if you wear size 5
- Many ready-made fashion rings start at size 6. Look for brands that offer 4.5 and 5, or choose adjustable designs.
- Resizing a ring down by one size is usually simple for plain gold and silver bands, but not for eternity rings set with stones all the way round.
- Fingers swell in heat and during pregnancy. If your size 5 rings feel tight in summer, a comfort-fit band can help.
Not sure of your ring size? Measure it on your phone screen in 30 seconds.
Open the free ring sizer →See every size on the ring size in mm chart.
Frequently asked questions
What is a size 5 ring in mm?
A US size 5 ring is 15.7 mm in inner diameter and 49.3 mm in inner circumference.
What is a size 5 ring in UK size?
US 5 is UK J½.
Is ring size 5 small for a woman?
Yes, it is a petite size. Most women wear US 6 to 7.
What is size 5 ring in inches?
About 0.62 inches in inner diameter and 1.94 inches around the inside.
What finger is size 5 for?
Size 5 is common for the ring finger of women with slim fingers and for the little finger of women who wear 6–7 on the ring finger.