Find Your Ring Size

Find Your Ring Size

Easy at-home methods — credit card screen sizer, printable guide, or a free sizer by mail.

Find your ring size with Brilliance

THREE WAYS

Pick a measuring method

Chart, screen, or printable guide — all synced to the sizes we use in the workshop.

ON-SCREEN SIZER

Measure with a credit card

Calibrate your screen with any bank or ID card, then match a ring you already own. Set browser zoom to 100% first.

1 Match your screen to a card

Hold a card flat against the screen and adjust until the outline matches its edges exactly.

2 Measure your ring

Lay your ring flat on the screen. Resize until the blue line sits just inside the band — you should see a thin blue ring all the way around. If the metal covers the blue line, the circle is too big; shrink it until the line peeks out.

Align to the blue line — not the soft fill inside, and not the outside of your ring.

US ring size7
Inner diameter17.3 mm

On-screen sizing is accurate to about half a size. Results match our ring size conversion chart. For a final answer, have your finger measured or use a physical ring sizer.

How to use our ring size guide
PRINTABLE GUIDE

How to use our ring size guide

If you already have a ring that fits, print our free guide and match it to the closest circle. Between two sizes? Choose the larger one.

  • Set printer scaling to “None” (100%)
  • Match your ring to the closest circle
  • If you’re between sizes, go larger

FREE BY MAIL

Get your free ring sizer

Prefer a physical tool? Request a complimentary ring sizer and we’ll send one your way.

Jeweler finishing a diamond ring

SIZING TIPS

Measure once.Wear forever.

A few quiet habits that make at-home sizing more reliable — before you order, and long after.

  • Evening fitFingers are typically larger later in the day. Measure then for the most comfortable everyday fit.
  • Room temperatureCold shrinks, heat expands. Size at a normal room temperature for a truer reading.
  • Knuckles & band widthLarge knuckles or wider bands may need a half size up so the ring slides on and still sits secure.
Jeweler crafting a diamond engagement ring in the Brilliance workshop
Hands setting a diamond into a custom engagement ring at the workbench

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