Convert Web Mercator (EPSG:3857, valid -85.05° to +85.05°) to Lat/Long 解説
Revert EPSG:3857 (Web Mercator (EPSG:3857, valid -85.05° to +85.05°)) meters back to GPS-ready Latitude and Longitude.
使い方
Enter X and Y coordinates in meters.
オンラインツール
ユースケース
- Debugging map tile coordinates.
- Extracting location data from map databases.
FAQ
Q: Is this WGS84?
A: Yes, the output is WGS84 Latitude/Longitude.
Q: What are the units?
A: Input must be in meters.
Q: Why is the latitude limit 85 degrees?
A: Because Web Mercator (EPSG:3857, valid -85.05° to +85.05°) math fails at 90 degrees (infinity).
Professional Verification Disclaimer
This content is provided for decision-support and educational purposes for geospatial professionals and does not constitute legal, surveying, or engineering advice. Regulations and official standards vary by jurisdiction and project scope. Information is based on publicly available standards as of January 11, 2026. For critical projects, always verify current requirements with:
- Licensed Professional Surveyors or Professional Engineers (PE) in the relevant jurisdiction
- Certified attorneys for legal interpretation of regulations
- Current guidelines from relevant authorities (FAA, JCAB, GSI, etc.)
Reference: Professional Use & Scope
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