緯度経度からWebメルカトル(EPSG:3857)へ変換
Generate EPSG:3857 (Web Mercator (EPSG:3857, valid -85.05° to +85.05°)) X/Y coordinates from standard GPS Lat/Long. Used for positioning elements on web maps like Google Maps and OpenStreetMap.
使い方
Enter WGS84 Coordinates. Click Convert.
オンラインツール
ユースケース
- Game development with geo-location.
- Overlaying custom graphics on Leaflet maps.
FAQ
Q: What is Web Mercator (EPSG:3857, valid -85.05° to +85.05°)?
A: It's the standard projection (EPSG:3857) used by most web maps. It treats the world as a square grid.
Q: Can I use this for measuring distance?
A: No. Web Mercator (EPSG:3857, valid -85.05° to +85.05°) distorts scale significantly away from the Equator. Use Haversine or Vincenty for distance.
Q: What is the max latitude?
A: Web Mercator (EPSG:3857, valid -85.05° to +85.05°) is clipped at approx +/- 85.05 degrees.
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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