Quick Answer
How do I measure my ring size at home?
Wrap a strip of paper or a piece of string around the base of your finger, mark where it overlaps, then measure the marked length in millimetres — that number is your finger circumference. Measure at the end of the day when your fingers are at their largest, and make sure the loop still slides over your knuckle. Send us that measurement and we will convert it to your Hong Kong ring size, or visit our showroom for a free professional fitting.
Getting the ring size right matters more than most people expect: a ring that is half a size too small will not pass the knuckle, and one that is too large can slip off. The good news is that you only need a strip of paper and a ruler to get a reliable measurement at home. Below are three methods, in order of accuracy.
Method 1: Measure your finger with paper or string
- Cut a thin strip of paper about 10 cm long and 5 mm wide, or take a piece of non-stretchy string.
- Wrap it around the base of the finger that will wear the ring — snug, but not tight enough to squeeze the skin.
- Check that the loop still slides over your knuckle. The knuckle is usually wider than the base of the finger, and the ring has to pass it.
- Mark the point where the strip overlaps itself, unwrap it, and measure from the end to the mark with a ruler.
- Record that length in millimetres. This is your finger circumference — the measurement we use to determine your ring size.
Measure two or three times and use the largest reading. Paper and string can stretch or shift slightly, and it is always safer to size up than down.
Method 2: Measure a ring she already wears
If you are planning a surprise proposal, this is usually the discreet option. Borrow a ring she already wears on the correct finger — ideally one with a plain, narrow band.
- Place the ring flat on a ruler and measure straight across the inside of the band, from inner edge to inner edge, through the centre.
- Record that inner diameter in millimetres, to the nearest half millimetre.
- To convert it to circumference, multiply the inner diameter by 3.14. A ring with a 17 mm inner diameter, for example, has a circumference of about 53.4 mm.
Make sure you know which finger the borrowed ring is worn on. The same person's ring finger and middle finger can differ by more than a full size, and the dominant hand is usually slightly larger.
Method 3: Free professional sizing at our showroom
The most accurate way to size a finger is with a physical set of ring sizers. Our GIA-certified gemologists will size you in a couple of minutes at our Tsim Sha Tsui showroom, at no charge and with no obligation to buy. If you are choosing a wide band or a shaped setting, this is worth doing — those styles fit differently from a plain band.
Book a showroom visitTips for an accurate measurement
- Measure at the end of the day. Fingers are at their smallest in the morning and swell slightly as the day goes on.
- Do not measure when your hands are cold. Cold fingers can measure a full size smaller than they normally are.
- Always check the measurement passes over your knuckle. If your knuckle is much larger than the base of your finger, size to the knuckle.
- Wide bands fit more tightly than narrow ones. For a band wider than about 6 mm, consider going up half a size.
- Avoid sizing right after exercise, a hot shower, or a salty meal — all of these temporarily enlarge your fingers.
Planning a surprise? You are covered
If you cannot measure her finger without giving away the surprise, do not let it stall the proposal. We can supply the ring at a standard size and adjust it afterwards — our mounting fee already includes one free resizing service, and most resizes are completed within two to three working days.
Not sure which size your measurement is?
Send us the millimetre measurement you recorded and we will confirm the matching Hong Kong ring size before you order. Our gemologists answer sizing questions every day and there is no charge for the advice.
Contact usFrequently Asked Questions
What is the most common ring size in Hong Kong?
For women, Hong Kong ring sizes in the low teens are the most frequently ordered, which is why our engagement ring pages default to size 13. It is only a starting point, though — finger sizes vary a great deal between individuals, so always measure rather than assume.
Can my ring be resized after I buy it?
In most cases, yes. Our mounting fee includes one free resizing service, and a plain or lightly set band can typically be adjusted within two to three working days. Full eternity bands, rings with stones set all the way around the shank, and certain metals such as tungsten cannot be resized — we will tell you before you order if the setting you have chosen has that limitation.
Should I size up or size down if I am between two sizes?
Size up. A ring that is slightly loose can be worn comfortably and adjusted later, but a ring that will not pass the knuckle cannot be worn at all. This is especially true if you are buying for a surprise proposal.
Does the width of the band change the size I need?
Yes. A wide band covers more of your finger and feels tighter than a narrow one at the same size. If your band is wider than about 6 mm, we generally suggest going up half a size.
How accurate is measuring with string compared with a real ring sizer?
The string or paper method is usually accurate to within about half a size, which is close enough to order with confidence given that resizing is included. A physical ring sizer at our showroom is more precise, and is worth using if you are choosing a setting that cannot easily be resized.
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