Determining the correct ring size is essential for wearing comfort. Fortunately, there are several reliable ways to find out your ring size.

Option 1 – Recommended

Have your ring size measured by your local jeweller. This is the most accurate method.

Option 2 – Measure a well-fitting ring

Measure the inner diameter of a ring that fits well. This can be done with a ruler, but a caliper provides more accurate results.
Compare the measured diameter with the table below to determine your ring size.

Option 3 – Print a ring sizer

Print the ring sizer on A4 format. Check that the scale is correct (1 cm on paper equals 1 cm in reality).

Place a well-fitting ring over the circles and select the circle that best matches the inside of the ring.

Option 4 – Measure your finger circumference

Do you not have a suitable ring? Use a piece of paper, string or a measuring tape.
Measure the circumference of your finger at the widest point (usually the knuckle). Pull tight, but not too tight.
The measurement in millimetres corresponds directly to the Belgian ring size. Round up if necessary.

Tips for accurate measurement

• Combine multiple measuring methods whenever possible.
• A well-fitting ring is perfectly round, not too tight and not too loose, and is a closed ring (not an open ring).
• Wide rings feel tighter than narrow rings. For example, you may wear size 54 for a narrow ring and size 56 for a wider ring.
• Rings with a rounded interior (comfort fit) feel roomier.
• Ring sizes may differ between the left and right hand.
• Fingers can swell due to heat, activity or the time of day. It is best to measure your ring size when your fingers are in a normal condition.

Ring sizes – conversion table

Ring sizes differ from country to country. Use the conversion table below to compare international ring sizes.

Belgium/ Circumference in mm	48	50	52	54	56	58	60	62	64	66	68	70
The Netherlands/ Diameter in mm	15.25	15.75	16.50	17.25	17.75	18.50	19.00	19.75	20.40	21.00	21.80	22.25
UK	I	K	L	N	P	Q	S	U	V	X	Y	Z
USA	4.50	5.25	6	6.75	7.50	8.25	9	9.75	10.50	11.25	12	12.75
SWISS	8	10	12	13.75	15.75	17.50	19.50	21.50	23.50	25.50	27.25	29.00
JAP	8	10	12	14	16	18	20	22	24	26	28	30

Ordered the wrong size?

Please note: rings are made to measure and are often personalised. Therefore, carefully check your ring size before placing your order.

If you have ordered the wrong ring size despite our advice, please send us an email with your order number. As a gesture of goodwill, we offer a 30% discount on the reorder of a ring in a different size, provided it is the same model and the same engraving.

This discount does not constitute an admission of liability and does not affect your statutory rights.