Professional Coordinate Conversion Tool

Our free coordinate converter tool supports multiple coordinate systems including MGRS (Military Grid Reference System), Latitude/Longitude, and UTM coordinates. Perfect for GIS professionals, surveyors, and cartographers.

Deep Dives & Advanced Positioning

Coordinate Mistake Simulator

Learn how common errors like datum mismatches and MGRS truncation can lead to 500m+ position errors.

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Authority Page: Geodetic Standards

Understand Datums (WGS84 vs NAD27), Projections, and EPSG codes for professional GIS workflows.

Read Standards

Decision Guide: Which System?

Not sure which tool to use? Follow our decision tree to find the right coordinate system for your project.

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Single Point Conversion

Quickly convert a single coordinate (no file needed).

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⚠️ Datum Hazard: Read Before Conversion

Coordinate values only have meaning when attached to a Datum.

  • WGS84: Standard for GPS, Google Maps, Web Mercator.
  • NAD27: Used in older USGS topographic maps (pre-1983).

Using the wrong datum can shift your position by 20-100+ meters. Always verify the source datum of your coordinates.

Step-by-Step Conversion Guide

Process your geographic data efficiently with these steps:

  1. Prepare your CSV, XLSX, or JSON file with coordinate data.
  2. Choose your conversion method (e.g., MGRS to Latitude/Longitude).
  3. Click Convert and download your processed file or ZIP archive instantly.

Who Are You?

Drone Surveyor

Flight plans on Web Mercator? Stop.

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Civil Engineer

WGS84 vs JGD2011 mismatch?

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SAR Responder

100km MGRS error risks?

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GIS Developer

Handling EPSG codes correctly?

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Avoid Disaster: Tools & Guides

Mistake Simulator

See standard errors in real-time.

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Forensic Cases

Learn from 100km coordinate disasters.

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Pre-flight Checklist

Validate data before deployment.

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Trusted Standards

Built on official geodetic standards:

🌐 OGC (Open Geospatial Consortium)
📐 ISO 19111 (Geographic Info)
🛡️ NGA (National Geospatial-Intelligence Agency)
🗾 GSI (Geospatial Information Authority of Japan)

FAQ

Q: What is MGRS?

A: MGRS is a coordinate system used by NATO militaries, based on the UTM grid system.

Q: Is the tool free for professional use?

A: Yes, our coordinate converter is free for both personal and professional use with no hidden charges.

Q: How secure is my data?

A: All conversions are performed locally within your browser. Your data is never uploaded to our servers, ensuring maximum privacy.

Quick Tools

🌐 Lat/Long to MGRS
📍 MGRS to Lat/Long
🗺️ Lat/Long to UTM
🌍 UTM to Lat/Long
🔄 Datum Converter
⏱️ DMS Converter