Ring Size Converter API
Ring Size Converter is a tool for converting ring sizes between US, UK, EU, JP, CH, and AU standards. It can also convert from diameter measurements in millimeters.
Live Test API
Try out the Ring Size Converter with a live request and see the response in real-time.
API Request
API Response
12345678910111213141516171819{ "status": "ok", "error": null, "data": { "input_diameter_mm": 17.3, "circumference_mm": 54.3, "conversions": { "diameter_mm": 17.3, "circumference_mm": 54.3, "us": 7, "uk": "N", "eu": 52, "jp": 17, "ch": -22, "au": "N" }, "note": "Sizes are approximate. For accurate sizing, visit a jeweler." } }
Multiple Access Methods
REST API with multiple response formats, GraphQL, and MCP for AI agents
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Extensible Markup Language
YAML
Human-readable data format
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Comma-separated values
GraphQL
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MCP
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Frequently Asked Questions
Get answers to common questions about the Ring Size Converter API
Who built the Ring Size Converter API?
The Ring Size Converter API is built and maintained by APIVerve. All 300+ APIs on our platform are developed in-house by the APIVerve team, ensuring consistent quality, unified authentication, predictable pricing, and enterprise-grade reliability backed by our 99.9% uptime SLA. We handle the infrastructure, maintenance, and updates so you can focus on building your application.
What does the Ring Size Converter API do?
Ring Size Converter is a tool for converting ring sizes between US, UK, EU, JP, CH, and AU standards. It can also convert from diameter measurements in millimeters. The API returns structured data in JSON, XML, or YAML format, making it easy to integrate into any application or workflow.
How fast is the Ring Size Converter API?
The Ring Size Converter API has an average response time of 268ms, with a median (p50) of 254ms and 99th percentile of 364ms. Our infrastructure maintains 99.9% uptime with servers distributed globally for low latency.
How much does the Ring Size Converter API cost?
Each call to the Ring Size Converter API uses 1 credit. The free tier includes 100 credits per month. Paid plans start at $29.99/month with higher limits, and enterprise plans offer custom pricing with priority support.
How do I authenticate Ring Size Converter API requests?
Include your API key in the request header as X-API-Key: your_key_here. All requests are made over HTTPS for security. You can get your API key by signing up for a free account.
What HTTP methods does Ring Size Converter support?
The Ring Size Converter API supports GET requests. Simply pass your parameters as query strings in the URL. Check our documentation for detailed parameter specifications.
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