GUIDES
Ring sizing guides
Practical, independently written guides on measuring, converting and choosing the right ring size. We add new guides regularly and update existing ones when sizing information changes.
In-depth articles
SIZING SYSTEMS · 7 min read
Ring Size Systems Explained: US, UK, EU, India, Japan and ChinaWhy the same finger has six different numbers, and how to convert between them.
Updated 2026-10-07
FIT · 6 min read
Wide Band Ring Sizing: Do You Need to Size Up?Why an 8mm band fits tighter than a thin one, and how much to adjust.
Updated 2026-10-07
MEASURING · 6 min read
Why Your Ring Size Changes (and When to Measure)Temperature, time of day, salt, pregnancy and weight all move your size.
Updated 2026-10-07
GIFTS & PROPOSALS · 6 min read
How to Find Someone's Ring Size Without Them KnowingPractical, low-risk ways to get a partner's size before you buy.
Updated 2026-10-07
MEASURING · 7 min read
10 Common Ring Sizing Mistakes and How to Avoid ThemThe errors that cause most wrong-size orders, with simple fixes.
Updated 2026-10-07
AFTER YOU BUY · 6 min read
Ring Resizing: What Can and Can't Be DoneHow far a ring can be resized, and which rings can't be changed at all.
Updated 2026-10-07
Core references
- How to measure ring size — Every method, step by step, with the mistakes that throw off a reading.
- Ring size chart — US, UK, EU, India, Japan and China sizes with millimeter measurements.
- Men's ring size guide — Typical ranges, wider bands, and why men's sizing runs differently.
- Women's ring size guide — Average sizes, resizing limits, and stacking multiple rings.
- Printable ring size chart — A print-at-home PDF sizer.
Brand sizing references
Independent, unofficial comparisons of brand numbering against standard sizing.