Irish Grid Converter: Transform Coordinates Instantly To Lat Lng

Convert between Irish Grid coordinates and Latitude/Longitude with our free, easy-to-use tool. Whether you’re working with Ordnance Survey Ireland maps, planning outdoor adventures, or need to convert coordinates for GIS applications, our converter provides instant, accurate results.

How to Use Our Coordinate Converter

Map Click Method

1. Zoom into your area of interest
   Navigate the map to the precise region you want to examine.
2. Click anywhere on the map
   Your click instantly generates coordinate values.
3. View both coordinate formats instantly
   See the Irish Grid and Latitude/Longitude displayed side by side.
4. Drag the marker to fine-tune the location
   Adjust the marker for pinpoint accuracy.

Manual Entry

1. Enter your coordinates in either format:
   • Latitude and Longitude (decimal degrees)
   • Irish Grid (easting and northing)
2. Click “Convert” to see the results
3. View the location on the interactive map
   Instantly visualize the converted coordinates.

Understanding Coordinate Systems

Irish Grid

• Usage: Employed on all Ordnance Survey Ireland maps.
• Measurement: Coordinates are expressed in meters from a fixed false origin.
• Components:
  • Easting: The distance in meters eastward from the origin.
  • Northing: The distance in meters northward from the origin.
• Application: It is the standard format for mapping, surveying, and various GIS applications in Ireland.

Latitude/Longitude (WGS84)

• Global Standard: Used by GPS devices and online mapping services worldwide.
• Measurement: Coordinates are given in decimal degrees.
• Components:
  • Latitude: Ranges from -90° to +90° (south to north).
  • Longitude: Ranges from -180° to +180° (west to east).

Common Uses

Outdoor Activities

• Hiking & Walking: Plan routes and trails with precise coordinate data.
• Cycling: Map out cycle trails using accurate grid references.
• Geocaching: Locate hidden caches with reliable coordinate conversion.
• Running Routes: Chart running paths with detailed mapping.

Professional Applications

• Surveying: Ensure precision in land and property surveys.
• Property Boundaries: Define legal boundaries with accuracy.
• Planning Applications: Use exact locations for development and planning.
• GIS Data Preparation: Integrate spatial data efficiently.
• Environmental Studies: Map environmental features and research sites.

Navigation

• GPS Waypoint Conversion: Easily translate between coordinate formats.
• Route Planning: Generate detailed navigation routes.
• Location Marking: Accurately designate meeting points and landmarks.
• On-the-Go Conversions: Quickly convert coordinates while mobile.

Why Use Our Converter?

• Instant Results: Get real-time conversions.
• Interactive Map: Visual confirmation of every location.
• Dual Input Methods: Choose between map click and manual entry.
• Mobile Friendly: Optimized for all devices.
• No Installation Needed: Use directly in your browser.
• Free to Use: No registration required.

Accuracy and Coverage

Our converter employs the official Irish Grid transformation parameters for maximum precision. Coverage includes:

• The entire Republic of Ireland mainland
• Offshore islands
• Surrounding coastal waters

Tips for Accurate Conversions

1. Double-check your input values
   Verify coordinates before converting.
2. Use Decimal Degrees
   For Latitude/Longitude entries, stick to decimal degrees.
3. Ensure Coordinates Fall Within Irish Coverage
   Confirm that your points are located within Ireland.
4. Verify on the Interactive Map
   Cross-check the converted location visually.
5. Utilize Copy Buttons
   For error-free transfer of results.

Technical Information

• Grid System: Uses EPSG:29902 (Irish Grid) for grid coordinates.
• Geodetic Datum: WGS84 (EPSG:4326) for Latitude/Longitude.
• Units: Coordinates are measured in meters.
• Accuracy: Official transformation parameters ensure high precision for most mapping and navigation tasks.

Frequently Asked Questions

What accuracy can I expect?

Our converter uses official Irish Grid transformation parameters, offering precision suitable for most mapping, surveying, and navigation purposes.

Why do my GPS coordinates differ slightly?

Small variations are normal due to the transformation between coordinate systems and the differences in underlying datums (Irish Grid vs. WGS84).

Can I use this for Great Britain?

Great Britain uses a different grid system (the British National Grid). This converter is specifically designed for the Irish Grid system used in the Republic of Ireland.

Click here to convert between the British National Grid and lat lng

How do I format my coordinates?

• Latitude/Longitude: Use decimal degrees (e.g., 53.3498, -6.2603).
• Irish Grid: Enter the easting and northing in meters as displayed on Irish maps.

Need to convert multiple coordinates? Our tool makes it easy to quickly switch between Irish Grid and Latitude/Longitude formats. Start by clicking on the map or entering your coordinates above.