Apparel SizeRing Size

UK to Circumference (mm) Ring Size for Comfort Fit

Snapshot

10 UK ring size equals 57.3 Ring circumference (mm).

  • Reference basis: This result uses the selected mm mapping as the profile basis.
  • Example: For 8 UK ring size, the mm mapping returns 52.2 Ring circumference (mm) under the same fit assumptions.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

57.3 Circumference (mm) value

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API and AI agent access

UK to Circumference (mm) Ring Size for Comfort Fit. fit: comfort-fit.

Machine-readable identifiers

Conversion family
ring-size
Source unit
uk
Target unit
circumference-millimeters
Fit
comfort-fit

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "ring-size",
  "value": 10,
  "from": "uk",
  "to": "circumference-millimeters",
  "parameters": {
    "fit": "comfort-fit"
  }
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "ring-size",
    "value": 10,
    "from": "uk",
    "to": "circumference-millimeters",
    "result": {
      "raw": 57.2649508896,
      "display": "57.3"
    },
    "canonicalPath": "/apparel-size/ring-size/uk-to-circumference-millimeters-for-comfort-fit/"
  }
}
API, OpenAPI and WebMCP documentation

Explanation

UK converts to Circumference (mm) using inner ring diameter in millimeters. Fit profile: Comfort Fit.

Model estimate based on inner ring diameter, not a fit guarantee. No manufacturer chart is established for this model; compare your measurement with the brand’s chart.

Method & Size Mapping

  • Model basis: output depends on the selected fit profile and follows the same fit mapping in both directions.
  • Profile reference: mm.
  • Consistency rule: calculator output and table values keep the same fit profile in both directions.

Common Conversion Values

UK valueCircumference (mm) value
8 52.2
9 54.7
10 57.3
11 59.8
12 1/2 63.6