Find your size at home.
Two minutes. All you need is a credit card and a ring you already wear on the right finger. No printer. No tape measure. No guessing.
Calibrate your screen with a credit card.
Hold any credit, debit, or ID card flat against the screen below. Drag the slider until the card on the screen matches the real card edge-to-edge.
Place a ring you already own on the screen.
Use a ring that fits the correct finger comfortably. Drag the slider until the circle below matches the inside of your ring exactly.
Your size.
This is the closest US size to the inside diameter you measured. International equivalents are listed below.
A note on accuracy. This tool is a strong starting point, not a guarantee. Screen calibration varies between phones, tablets, and laptops, and small differences in how the card or ring is held can shift the result by up to a half-size.
For the most accurate measurement, get sized in person by a local jeweler. Most do it free in under five minutes. If your Aydins ring arrives and the fit is off, that is exactly what our 30-day exchange and Lifetime Sizing programs are for (see below).
- Measure at the end of the day. Fingers swell, and you'll size a half-size differently in the morning.
- Measure the hand the ring will live on. The dominant hand is usually a half-size larger.
- Wider bands (6mm+) wear a half-size tighter. If the result is between two sizes, size up.
- If your ring is between sizes, round up. Comfort fit is forgiving on the tighter side.
Wrong size? You're covered.
30-day exchange. Unengraved standard rings exchange free within 30 days. Engraved rings are exchange-only with a $34.50 surcharge.
Lifetime Sizing. Fit changes after 30 days are covered for the original purchaser at a small flat fee, with no time limit.
Aydins Lifetime Warranty. Manufacturing defects are covered free for the first 6 months, then $34.50 through month 12, then $54.50 flat after that.