Determine Ring Size
15 minutesConvert US/EU/JP sizes and account for band width.
Field context
This workflow is part of 3 niche fields
Complete guide for ring making intro — step-by-step workflow, tools, checklist, and expert tips to get started.
Convert US/EU/JP sizes and account for band width.
Compute strip length from ring size and band width.
Anneal and solder seam with hard solder.
Progress through grits to mirror finish.
Circumference = π × (ID + metal thickness).
| US size | ID mm | Blank 6mm wide |
|---|---|---|
| 6 | 16.5 | 52 mm |
| 7 | 17.3 | 54 mm |
| 8 | 18.2 | 57 mm |
Verify all calculator inputs against physical measurements before cutting or mixing.
Compare results to known good references in ring before final assembly.
Pause immediately if tools malfunction, ventilation fails, or materials react unexpectedly.