11 interactive ring-size calculators with live visualizers. Eagle-eyed accuracy for every calculation.
11
INTERACTIVE
—
REFERENCE PAGES
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EU / ISO 8653 to US/Canada Ring Size Converter
Convert EU / ISO 8653 ring sizes to US & Canadian sizes. EU 54 ≈ US 6¾, EU 52 = US 6, EU 5...
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Japan / China / Korea to US/Canada Ring Size Converter
Convert Japan, China & Korea ring sizes to US & Canadian sizes. JP 14 = US 7, JP 13 = US 6...
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Mega Ring Size Converter
Convert ring sizes across every system — US/Canada, UK, EU/ISO 8653, France, Italy, Japan,...
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Ring Diameter (mm) to US/Canada Ring Size Converter
Convert ring inner diameter in mm to US & Canadian sizes. 17.3 mm = US 7, 16.5 mm = US 6, ...
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Switzerland (CH) to US/Canada Ring Size Converter
Convert Swiss (CH) ring sizes to US & Canadian sizes. Swiss 14 ≈ US 6¾, Swiss 12 = US 6, S...
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UK / Australia / South Africa to US/Canada Ring Size Converter
Convert UK, Australian & South African ring letters to US & Canadian sizes. UK N½ = US 7, ...
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US/Canada to EU / ISO 8653 Ring Size Converter
Convert US & Canadian ring sizes to EU / ISO 8653. US 7 = EU 54, US 8 = EU 57, US 6 = EU 5...
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US/Canada to Inner Diameter (mm) Ring Size Converter
Convert US & Canadian ring sizes to inner diameter in mm. US 7 = 17.3 mm, US 8 = 18.1 mm, ...
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US/Canada to Japan / China / Korea Ring Size Converter
Convert US & Canadian ring sizes to Japan, China & Korea. US 7 = JP 14, US 8 = 16, US 6 = ...
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US/Canada to Switzerland (CH) Ring Size Converter
Convert US & Canadian ring sizes to Swiss (CH) sizes. US 7 = CH 14, US 8 = 17, US 6 = 12. ...
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US/Canada to UK, Australia & South Africa Ring Size Converter
Convert US & Canadian ring sizes to UK, Ireland, Australia, New Zealand & South Africa let...
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Every EagleCalculator ring-size calculator includes a live real-time visualizer that updates on every keystroke, a full worked example with verified math, and a complete FAQ section. All formulas are verified against official sources. Results are for informational purposes only.
Last updated: July 29, 2026 · 11 interactive + 0 reference pages live · Auto-updates as new calculators are added · Eagle-eyed accuracy for every calculation.