Shopify ring sizing

Ring Sizer ProRing size,on the product page.

Measure a finger or an existing ring beside checkout.

Preview on one product

No Liquid · Free during launch · No camera

Ring Sizer Pro on a Shopify product page with the measure-your-ring screen
  • Theme app block
  • Exact-match only
  • US · UK · EU · JP
  • Ring products only

Size charts list numbers.
Shoppers still guess.

Printed ring size chart and measuring tools on a desk

Static chart

Ring Sizer Pro finger measurement calibration screen

On the product page

How it works

Product page with sizing beside the size selector

Open sizing

Credit card calibration in Ring Sizer Pro

Measure

Recommended ring size shown after measuring

Exact size

No silent size changes.

A size applies only on an exact, available match.

See the flow →
Exact available ring size confirmed before add to cart
Placing the Ring Sizer Pro app block in Shopify Theme Customizer

Start with one product.

Place the app block. No Liquid edits.

Request setup preview

Free while we validate

Paid plans are planned later after usage and support needs are clear.

Free launch

$0per month · up to 1,000 recorded completed measurements / monthPreview the free launch
Ring Sizer Pro iPhone app home screen

Need your own ring size?

Shoppers can use the iPhone app.

Get the iPhone app

FAQ

Does Ring Sizer Pro edit my Shopify theme code?

No. Add the app block in the Theme Customizer next to your size selector.

Will it show on every product?

Only where you want it — title, type, tag, vendor, and collection rules.

Can it select a size variant?

Only an exact, available match from the existing-ring flow.

Does it use the camera?

No. Shoppers calibrate with a credit card and adjust an on-screen guide.