Irish Grid / ITM Converter
A free, browser-based converter. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserIntermediate
Irish Transverse Mercator (ITM / EPSG:2157)
Convert in either direction.
Direction
Latitude (°)
Longitude (°)
Result
Enter a coordinate and press Convert.
How to use this calculator
- Pick the direction (lat/long ⇄ grid).
- Enter WGS84 coordinates or ITM easting/northing.
- Press Convert.
How it works
Converts between WGS84 latitude/longitude and Irish Transverse Mercator (ITM, EPSG:2157), the modern grid for the island of Ireland.
The legacy Irish Grid (TM75) uses different false origins and a slightly different datum, so its coordinates will differ.
Worked example
Dublin (53.3498, −6.2603). Converts to about 715,830 m E, 734,697 m N in ITM.
Frequently asked questions
Is this ITM or the old Irish Grid?
This uses Irish Transverse Mercator (ITM), the current standard. The older Irish Grid (TM75) has different offsets.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.