Find Your Fit
Find the size that best fits you or a loved one with the Tiffany & Co. jewellery size guide. Refer to our measurement charts or follow the instructions below.
| US Size | Inside circumference (mm) |
|---|---|
| 3 | 42.9 mm |
| 3.5 | 45.5 mm |
| 4 | 46.8 mm |
| 4.5 | 48.0 mm |
| 5 | 49.3 mm |
| 5.5 | 50.6 mm |
| 6 | 51.9 |
| 6.5 | 53.1 mm |
| 7 | 54.4 mm |
| 7.5 | 55.7 mm |
| 8 | 57.0 mm |
| 8.5 | 58.3 mm |
| 9 | 59.5 mm |
| 9.5 | 60.8 mm |
| 10 | 62.1 mm |
| 10.5 | 63.4 mm |
| 11 | 64.6mm |
| 11.5 | 65.9 mm |
| 12 | 67.2 mm |
| 12.5 | 68.5 mm |
| 13 | 69.7 mm |
Find Your Ring Size
Measure Your Finger
- Use a flexible measuring tape or length of string.
- Wrap it around the finger you’ll wear your ring on—if you’re creating a ring stack, consider where on your finger the ring will sit. If using string, mark the point on the string where the ends meet with a pen.
- Lay the string on a flat surface and use a ruler to measure the length (in inches or millimeters) up to the mark. Compare your measurement to the Tiffany size chart [link] above to determine your ring size. If you are between sizes, opt for the larger size.
Measure an Existing Ring
A helpful method if you’re surprising someone with a gift or treating yourself.
- Choose a ring that already fits your finger well.
- Measure the interior diameter of the ring in millimeters (mm).
- Use the measurement chart above to match the size of your ring to the closest Tiffany size in mm. The interior of the ring should align with the outer edge of the circle.
Contact Us
There’s no question too small or request too big for our Tiffany client advisors. From choosing an engagement ring or gift to providing in-store or virtual appointments, we’re always at your service.
Hours of Operations:
Monday–Friday: 10:30 – 19:00
