Animated still from The Borrowed Ring: Tess reaches for his old ring on the bedside tray to size it in secret
Aydins Ring Sizer

Find his ring size without spoiling the surprise.

Borrow a ring he already wears on the finger the new ring is for. Size it on your phone in about two minutes, then put it back where you found it.

Find his size

All you need is his ring and any card the size of a credit card.

Step 1 · Find his size

Size the ring he already wears.

The sizer uses your screen as a ruler. First you calibrate it: hold a card flat against the screen and slide until the outline matches the card edge to edge. That tells the tool how big your screen really is. Then lay his ring on the circle and slide until the circle fills the inside of the ring.

  • His ring, from the finger the new ring is for. A ring from a different finger gives a different size.
  • Any card the size of a credit card. A blank or loyalty card works; keep card numbers covered.
  • The phone, tablet or laptop you will measure on. Calibrate on that same screen.
Animated still from The Borrowed Ring: Tess at the kitchen counter after sizing his ring with the Aydins Ring Sizer on her phone
01

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.

Hold a real card vertically against the screen. Drag the slider until the long edge matches: 85.6 mm
02

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.

03

Your size.

This is the closest US size to the inside diameter you measured. International equivalents are listed below.

0
Slide to measure
UK
EU
Japan

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.

  • 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.

Your estimate: size -. Use it to choose his REVOLVE below.

Step 2 · The ring in the video

REVOLVE

Black Tungsten Fidget Spinner Wedding Ring

$ 4,173.00

  • Black tungsten carbide with a brushed center band that spins
  • Polished stepped edges and a comfort-fit interior
  • Two widths: 6mm and 8mm
Width
Size Choose a size

Choose a width and size to continue.

Engraving is chosen on the ring page, then you add the ring to your cart.

Step 3 · Make it his

Free engraving on every ring.

On the REVOLVE page you choose where the engraving goes and what it says. These are the options the ring page offers:

Where

  • Inside
  • Outside
  • Inside and outside (+$25)

What

  • Text, basic font
  • Text, fancy font
  • Fingerprint
  • Handwriting
  • Custom artwork

Your engraving is applied at our Texas workshop. How engraving works

  1. Find his size

    Use the sizer above with the ring he already wears.

  2. Pick his width and size

    Only sizes we can ship in that width can be selected.

  3. Add the engraving, then the cart

    Choose placement and wording on the ring page, add to cart, and check out.

Questions

Before you order.

How accurate is the phone sizer?

It 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.

What if there is no ring to borrow?

The sizer needs a ring that already fits the finger the new ring is for. Without one, the most accurate option is an in-person sizing at a local jeweler. You can also ask someone who knows his size. A ring from a different finger, or from someone else, will not give his size.

The estimate is between two sizes. Which one?

Wider bands (6mm and up) wear a half-size tighter, so if the result is between two sizes, size up. Measure at the end of the day, on the hand the ring will be worn on.

Can I engrave it?

Yes. Engraving is free on every Aydins ring. You choose the placement and the wording on the ring page before adding it to your cart.

When will it arrive?

Free U.S. shipping on every order. Please allow 1–3 business days for processing before dispatch. Shipping details

What if the size turns out wrong?

Your options are explained on our Returns & Exchanges page. Questions before you order? Contact us.

Reviews of REVOLVE

5.0 average from 6 customer reviews

“Very good quality. He loves it”

Dawn A., REVOLVE review

“Beautiful ring. Feels like it will stand up to a lot. The inside is so nicely curved so it’s very comfortable.”

Kailie A., REVOLVE review

“Came a few days after expected but fits great! It spins but doesn’t make a clicking sound like I was hoping!”

Cora P., REVOLVE review

Quoted in full from customer reviews on the REVOLVE product page. More store reviews