RingSizeCharts
Measure your ring size at home: US, UK, EU, Japan, China.
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Read the full description
Measure your ring size in 2 minutes with a string, a ring you already own, or your screen. Get US, UK, EU, Japan and China sizes at once, in mm and inches. What's different: it follows ISO 8653:2016, converts both ways, adds a full half-size chart plus guides on temperature and band width, and runs entirely in your browser - no install, no account, nothing uploaded. Free, nine languages, six ring styles.
Visit website ↗ Source listing ↗
PH · launched Oct 16, 2026 · 2 upvotes (top 23%)
- Retail & commerce
- Workflow automation
- B2C
- Not AI
- Hobby / open-source project
- E-Commerce
- Lifestyle
- Shopping
Similar launches
See all 170 similar launches →Could you build this?
Yes It is a measurement guide and size-conversion calculator built on a published standard (ISO 8653). The content and conversion logic are straightforward to implement.
Competitors
Other products that read as similar to this one : 170 launches clear the similarity bar, closest 8 shown.
Attention rank: #14 of 171 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 324 days after the earliest competitor.
- Shoe Size Conversion Calculator · ph · 2026-10-05 · 1 upvotes · similarity 0.53
- Size Convertly · ph · 2026-09-15 · 1 upvotes · similarity 0.52
- Gauge to Millimeters · ph · 2026-10-02 · 1 upvotes · similarity 0.52
- Sizer · ph · 2026-10-07 · 1 upvotes · similarity 0.49
- Oura Ring 5 · ph · 2026-05-31 · 327 upvotes · similarity 0.47
- Picture Frame Sizes · ph · 2026-10-15 · 1 upvotes · similarity 0.46
- Reaal Online Ruler · ph · 2026-10-02 · 1 upvotes · similarity 0.45
- GemSize · ph · 2026-09-29 · 2 upvotes · similarity 0.45
Other launches for this product
- No other launches for this product.