Convert single coordinates or whole CSV files between common geographic and projected
coordinate reference systems. Supports WGS 84, Web Mercator, British National Grid,
Irish Transverse Mercator, ETRS89 / LAEA Europe, zone-based UTM conversions, and
arbitrary Proj / WKT definitions.
CRS settings
Paste a Proj string or WKT definition and choose how to interpret the X/Y values.
Paste a Proj string or WKT definition and choose how to interpret the output X/Y values.
Input coordinate
WGS 84 accepts decimal degrees or DMS such as 51°30'26.6"N.
Enter a source coordinate and choose a target CRS.
Converted result
Source: WGS 84Target: Web Mercator
Converted coordinates will appear here.
Geographic output includes decimal degrees and DMS. Projected output uses metres.
Batch conversion settings
Paste a Proj string or WKT definition and choose how to interpret incoming coordinate columns.
Paste a Proj string or WKT definition and choose how to interpret converted coordinate columns.
Load CSV data
Drop a CSV file here or choose a file below.
You can also paste CSV text into the editor.
Load a CSV file or paste CSV text to configure coordinate columns.
Column mapping
Failed rows are preserved and annotated in a conversion_error column.
Output is generated after you load data and run the conversion.