Our ring size guide

To choose the ideal size for your ring, we offer a simple and practical guide. Formose ring sizes are based on French sizes. If you have any questions, please do not hesitate to contact us.

Measure your finger

To find out your size, you can measure your finger with a flexible tape measure or a thin string.

• Wrap it around the base of your finger and mark the meeting point.
• Then, measure the length obtained in millimeters: this is the circumference of your finger.

Size equivalents

If your measurement is between two sizes, opt for the larger size for more comfort.

Your finger circumference (mm)	French size	US size	Spanish size
49-50	50	5	10
51-52	52	6	12
53-54	54	7	14
55-57	56	8	16
57-59	58	9	18
60-62	60	10	20

Alternative ways to measure

You can also use an existing ring that fits you well and measure its inside diameter. Then compare this diameter with our conversion guide to determine your size.

Important points

The accuracy of the finger circumference does not need to be exact to the millimeter.

If you have any doubts, contact us and we will help you choose the perfect size for your ring.

If, despite your measurements, the ring does not fit you, you can return it to us within 14 days so that we can exchange it for you.