Country Ring Size Systems
Browse country sizing guides in one place: Turkey, China, Indonesia, Brazil, Swiss, Mexico, and the Philippines, each labeled by how its figures were sourced.
Some countries share a scale with the verified dataset (Turkey, Mexico, the Philippines); others rest on one retailer guide or a third-party reference. Each card says which.
Comparison table
Every guide in this hub, the system it uses, and where its figures come from.
| Guide | System used | Source | Source type | Last verified |
|---|---|---|---|---|
| Turkey ring size chart | Turkish system (circumference minus 40) | RingSizeConvert verified sizing dataset | Verified dataset | Maintained dataset |
| China ring size chart | East-Asia numeric scale (moderate confidence) | RingSizeConvert verified sizing dataset | Verified dataset | Maintained dataset |
| Indonesia ring size chart | Frank & co. retailer scale — not a universal Indonesian system | Frank & co. | Retailer guide | 2026-08-25 |
| Brazil ring size chart | Brazilian numbering via third party — confirm the retailer guide | ringssizechart.com | Third-party reference | 2026-08-24 |
| Swiss ring size chart | Reference labeled Swiss (CH, ES) — not a universal scale | ringssizechart.com | Third-party reference | 2026-08-24 |
| Mexico ring size chart | Standard North American (US) numeric scale | RingSizeConvert verified sizing dataset | Verified dataset | Maintained dataset |
| Philippines ring size chart | US standard numerical scale | RingSizeConvert verified sizing dataset | Verified dataset | Maintained dataset |
All guides in this hub
Each card names its source so you know what you are trusting before you click through.
Turkey ring size chart
Corroborated Turkish circumference-minus-40 system with conversions.
System: Turkish system (circumference minus 40)
Source: RingSizeConvert verified sizing dataset · Verified dataset · Last verified Maintained dataset
China ring size chart
China sizes alongside the corroborated East-Asia numeric scale, with confidence notes.
System: East-Asia numeric scale (moderate confidence)
Source: RingSizeConvert verified sizing dataset · Verified dataset · Last verified Maintained dataset
Indonesia ring size chart
Frank & co.'s published Indonesian retailer sizes (7–24) with millimeter measurements.
System: Frank & co. retailer scale — not a universal Indonesian system
Source: Frank & co. · Retailer guide · Last verified 2026-08-25
Brazil ring size chart
Third-party Brazilian-size reference (7–39) with approximate US sizes and millimeters.
System: Brazilian numbering via third party — confirm the retailer guide
Source: ringssizechart.com · Third-party reference · Last verified 2026-08-24
Swiss ring size chart
Third-party reference labeled Swiss (CH, ES) with approximate US sizes and millimeters.
System: Reference labeled Swiss (CH, ES) — not a universal scale
Source: ringssizechart.com · Third-party reference · Last verified 2026-08-24
Mexico ring size chart
Mexican sizes on the standard North American (US) numeric scale with international comparisons.
System: Standard North American (US) numeric scale
Source: RingSizeConvert verified sizing dataset · Verified dataset · Last verified Maintained dataset
Philippines ring size chart
Philippine jewelers use the US standard numerical scale, compared with UK, cm, and mm.
System: US standard numerical scale
Source: RingSizeConvert verified sizing dataset · Verified dataset · Last verified Maintained dataset
How to read the source labels
The same four labels are used on every directory hub.
- Verified dataset — the guide compares house numbering against the site's maintained, verified sizing data rather than mirroring a separate table.
- Manufacturer table — the guide restates that maker's own published measurements.
- Retailer guide — the guide mirrors one retailer's chart, which is not a universal national scale.
- Third-party reference — figures reach us via a third party; confirm with the brand or retailer before ordering.
Browse the other hubs
Four directories cover every brand and country guide on this site.
- Luxury Brand Ring Size Charts
Browse every luxury-house sizing guide in one place: Cartier, Tiffany, Gucci, Pandora, Hermès, Chanel and more, each with honest source attribution.
- Indian Jeweller Ring Size Charts
Browse Indian jeweller sizing guides in one place: Tanishq, CaratLane, Kalyan, Mia by Tanishq, and GIVA, with notes on how Indian scales map internationally.
- Smart Ring Sizing by Model
Maintained smart-ring size comparison by model: version coverage, whole-size ranges, band widths, last-verified dates, source links, and direct links to each model sizing guide.