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Convert Lat/Long to Web Mercator
Generate EPSG:3857 (Web Mercator) X/Y coordinates from standard GPS Lat/Long. Used for positioning elements on web maps like Google Maps and OpenStreetMap.
How to Use
Enter WGS84 Coordinates. Click Convert.
Online Tool
Use Cases
- Game development with geo-location.
- Overlaying custom graphics on Leaflet maps.
FAQ
Q: What is Web Mercator?
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 distorts scale significantly away from the Equator. Use Haversine or Vincenty for distance.
Q: What is the max latitude?
A: Web Mercator 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
Related Coordinate Conversion Tools
US State Plane (SPCS) Converters & Local Guides
Professional engineering and surveying transformations from state-specific conformal grids to GPS WGS84.
Professional Risk Notice
Using the wrong datum or applying coordinates without grid-to-ground correction can cause 1-400 metre positional errors —a leading cause of surveying negligence claims and contract disputes.
Related Tools & Resources
Explore our full suite of coordinate transformation and compliance tools:
Certified Geodetic Insight
Verified against professional geodetic standards
The $50,000 Geodetic Drift Liability: NAD83 vs WGS84
Because the North American Plate moves ~2cm/year, NAD83(2011) and WGS84(G1762) currently diverge by over 2.2 meters. Using a "standard" GPS WGS84 coordinate for a high-precision NAD83 cadastral staking has triggered $50,000 Professional Liability claims for foundational rework and utility misplacement.
Risk Exposure Metric:
2.2-Meter Tectonic Drift & Epoch Accumulation
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Warning: Verify Your Calculation
Coordinate accuracy varies by device and datum. Do not use these results for legal or construction purposes without checking:
GPS Accuracy Alert
Your phone's GPS can be off by 30 meters. This can cause critical errors in your data.
Check My Accuracy →Datum Shift Risk
Using the wrong coordinate system (e.g. WGS84 vs NAD83) creates a permanent 1-meter offset.
Verify My Datum →