Free size tools
The conversions Find my size runs inside Ruban Size, on a page of their own. Free, no sign-up, the full tables included.
- Ring size converterFrom a finger circumference or a ring’s inner diameter to US, UK, EU and Japanese sizes.Open it
- Shoe size converterFrom a foot length to EU, UK, US men’s, US women’s and Japanese sizes, for adults and children.Open it
- Bra size calculatorFrom underbust and bust to a bra size in seven systems, with the sister sizes.Open it
Try Ruban Size on your store.
Free for 5 size charts. Pro and Fit start with a 14-day free trial, billed by Shopify.