Convert CSV to GeoJSON online
Convert CSV — plain spreadsheet rows of latitude/longitude you can open in Excel or Google Sheets — into GeoJSON, which is the open, web-native JSON format read by Leaflet, Mapbox and virtually every modern GIS tool. Drop your CSV file below, GeoJSON is already selected as the output, and download the result. Everything runs in your browser and the cloud; you never install anything.
Upload your file
Drag and drop it into the converter below. A free account comes with three welcome conversions.
Convert in the cloud
MapGO detects the format and produces your download in seconds.
Download & keep it
Files are deleted automatically after 48 hours.
Files are deleted automatically after 48 hours. Your files are never shared.
Why convert CSV to GeoJSON with MapGO?
Most online converters take one file and hand back one file. MapGO is built on a real geospatial engine, so a single upload can do more.
- Several outputs in one upload
Tick GeoJSON and any other formats you need; every selected format is delivered from the same file.
- Files up to 5 GB
Far beyond the browser-based converters that choke past a few hundred megabytes.
- Reproject while you convert
Set a source and target EPSG code and the coordinate system is changed during the conversion, no second tool needed.
- Private by default
Files are deleted automatically after 48 hours.
CSV vs GeoJSON at a glance
| CSV | GeoJSON | |
|---|---|---|
| Typical use | Spreadsheets and data analysis — Excel, Google Sheets, pandas | Web maps and APIs (Leaflet, Mapbox, D3); human-readable data in git |
| Size on disk | Small for point data; geometry beyond points stored as WKT text | Verbose plain text — the largest of the common formats, but gzips well |
| Attribute support | Flat columns only — no nesting; readers guess the types | Flexible JSON properties — nesting and arrays allowed |
| Software support | Opens everywhere, including every non-GIS tool | Every modern GIS tool and every web mapping library |
| Web-friendliness | Fine for point data; not a real geometry format | Excellent — the native format of web mapping |
Other ways to convert CSV to GeoJSON
You don't need an online tool for this. If you have GDAL installed, one command does it.
In QGIS (free): open your CSV via Layer → Add Layer, then right-click the layer → Export → Save Features As… and pick GeoJSON as the format.
The MapGO converter above is for when you don't want to install anything, need to convert to several formats at once, or are handling files too large for a desktop machine.
ogr2ogr -f "GeoJSON" output.geojson input.csvCSV to GeoJSON: frequently asked questions
Is the CSV to GeoJSON converter free?
Partly. Every new account gets three welcome conversions for free, so you can try CSV to GeoJSON without paying. After that, you can either buy a credit pack and pay per conversion, or take a subscription, which gives you unlimited conversions within the plan's file-size limit. There is nothing to install; the whole conversion runs in the cloud.
Is my data kept private?
Conversion is fully automated and your file is never shared. Files are deleted automatically after 48 hours. Download your GeoJSON result and it's yours to keep.
What does the GeoJSON output contain?
You get a clean GeoJSON file with your geometry and attributes preserved, ready to open in the tools that read GeoJSON.
How should my CSV be structured for conversion?
One row per feature with a latitude and a longitude column in decimal degrees. The headers are detected automatically and are not case-sensitive — lat, latitude or Y for one, and lng, long, longitude or X for the other. If your rows hold full shapes rather than single points, put the Well-Known Text in a column named geometry_wkt instead.
Which coordinate system will the GeoJSON output use?
By default the output keeps your source coordinate system; pick EPSG:4326 (WGS84) as the target if you want spec-standard GeoJSON that works immediately in Leaflet, Mapbox and other web libraries. MapGO reprojects during the conversion — no separate step needed.
Can I convert GeoJSON back to CSV?
Yes — use our GeoJSON to CSV converter for the reverse direction. MapGO supports conversions in both directions between these formats.
Also convert
See it on the map first.
Open your CSV in the workspace, check the shapes and attributes, then convert and download from the same place.