Bulk CSV Coordinate Converter
Upload a CSV, map your X/Y columns, choose source and target CRS, then download a converted CSV. Everything runs locally in your browser.
Coordinates
Bulk CSV Coordinate Converter
Upload a CSV, map your coordinate columns, choose source and target systems and download a converted CSV.
CSV stability guidance: best up to 100 MBpreview first rowserror report available
CSV and coordinate conversion can handle larger batches than PDF/OCR, but very large files still depend on the visitor’s browser memory.
CSV and coordinate conversion can handle larger batches than PDF/OCR, but very large files still depend on the visitor’s browser memory.
1) Upload CSV
Drop your CSV here
or choose a file
No file selected
2) Pick X/Y columns
3) CRS (explicit)
4) Output
Tip: use “_error column” while testing, then switch back to keep/drop.
Input preview (first rows)
Shows your CSV + planned output columns (empty until conversion).
140+ supported CRS including EPSG:4326, EPSG:3857, EPSG:28992, EPSG:2154, EPSG:27700 and all WGS84 UTM zones • Built for GIS workflows