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Converters
All GIS converters →
GeoJSON
GeoJSON to ESRI Shapefile GeoJSON to GeoPackage GeoJSON to PMTiles
ESRI Shapefile
ESRI Shapefile to GeoJSON ESRI Shapefile to GeoPackage ESRI Shapefile to MBTiles
CSV
CSV to GeoJSON CSV to GeoPackage CSV to GPX
GPX
GPX to GeoJSON GPX to GeoPackage GPX to KML
GeoPackage
GeoPackage to GeoJSON GeoPackage to ESRI Shapefile GeoPackage to File Geodatabase
FlatGeobuf
FlatGeobuf to GeoJSON FlatGeobuf to GeoPackage FlatGeobuf to ESRI Shapefile
JSON-FG
JSON-FG to GeoJSON JSON-FG to GeoPackage JSON-FG to ESRI Shapefile
KML
KML to GeoJSON KML to GeoPackage KML to ESRI Shapefile
Mapbox Vector Tiles
Mapbox Vector Tiles to GeoJSON Mapbox Vector Tiles to GeoPackage Mapbox Vector Tiles to ESRI Shapefile
PMTiles
PMTiles to GeoJSON PMTiles to GeoPackage PMTiles to ESRI Shapefile
MBTiles
MBTiles to GeoJSON MBTiles to GeoPackage MBTiles to ESRI Shapefile
AutoCAD DXF
AutoCAD DXF to GeoJSON AutoCAD DXF to GeoPackage AutoCAD DXF to ESRI Shapefile
GML
GML to GeoJSON GML to GeoPackage GML to ESRI Shapefile
Microsoft Excel
Microsoft Excel to GeoJSON Microsoft Excel to GeoPackage Microsoft Excel to CSV
GeoRSS
GeoRSS to GeoJSON GeoRSS to GPX GeoRSS to KML
MapInfo
MapInfo to GeoJSON MapInfo to GeoPackage MapInfo to ESRI Shapefile
File Geodatabase
File Geodatabase to GeoJSON File Geodatabase to GeoPackage File Geodatabase to ESRI Shapefile
SpatiaLite / SQLite
SpatiaLite / SQLite to GeoJSON SpatiaLite / SQLite to GeoPackage SpatiaLite / SQLite to ESRI Shapefile
KML to GeoJSON

KML to GeoJSON Converter Online | GeoDataViewer

Quick answer: Convert KML to GeoJSON online for free. Open your KML data, inspect the map preview, and download GeoJSON output locally in your browser — no upload required. KML (Keyhole Markup Language) is an XML format for geographic placemarks, paths, polygons, and presentation information. KMZ is a ZIP package containing a KML document and sometimes images or other assets. Open either file directly in the viewer to inspect its geographic features without installing Google Earth.

Prepare your file and check the result

Before opening

Choose Open File or drag in a KML or KMZ containing placemark geometry. Open KMZ directly without unzipping. Linked resources, overlays and styling may not appear exactly as they do in Google Earth.

Before sharing or converting

Check placemark locations, names and paths. Keep the original if you need tours, linked content or application-specific styling.

Download a small KML exampleDownload the same locations as KMZ

Open this example in the tool above. Expect three synthetic points near London: West point, East point and North point. Coordinates span −0.13 to −0.12 longitude and 51.50 to 51.51 latitude. These are demonstration locations, not survey data.

Source Format Guide

What is KML?

KML (Keyhole Markup Language) is an XML format for geographic placemarks, paths, polygons, and presentation information. KMZ is a ZIP package containing a KML document and sometimes images or other assets. Open either file directly in the viewer to inspect its geographic features without installing Google Earth.

KML is designed to describe geographic content in a way that map viewers and Earth-browser tools can display with labels, styles, folders, and presentation-oriented behavior.

It is excellent for visual review and lightweight sharing, but many analytical GIS teams convert it when they need simpler feature storage, database workflows, or richer bulk editing support.

Common Workflows

Common use cases

  • Stakeholder review packages that are easier to open in Earth-browser software than in full GIS tools.
  • Field reference overlays, placemark collections, and visual storytelling layers.
  • Converting from GIS project data into a presentation-oriented deliverable for non-specialist users.
Ecosystem

Where you will encounter it

  • Google Earth-style viewers and visual review tools.
  • Presentation-focused mapping and stakeholder communication workflows.
  • Lightweight overlay exchange between GIS and consumer map tools.
Strengths

Why teams choose KML

  • Good fit for Earth-browser viewing and presentation-style map review.
  • Supports a familiar XML structure for placemarks, folders, and simple styling.
  • Easy way to deliver map overlays to non-GIS audiences.
Limitations

Where KML gets awkward

  • KML is less efficient than modern binary or database-backed formats for large production datasets.
  • XML structure is more verbose than plain JSON or binary exchange files.
  • It is better for presentation than for heavy analytical editing or database-style workflows.
  • A feature preview may not reproduce Google Earth tours, network links, image overlays, or 3D models; retain the original KML or KMZ for those uses.
Conversion steps

How to convert KML to GeoJSON online

  1. 1. Add your KML file

    Drop the source data into the converter above. Keep any required sidecar files together when your dataset uses them.

  2. 2. Check the map preview

    Inspect the geometry and attributes before exporting so you can spot missing layers or coordinate-system issues.

  3. 3. Download GeoJSON

    Run the conversion and save the generated GeoJSON output directly from your browser. Your source file stays on your device.

File Structure

Common file extensions and sidecar files

.kml
Main XML file containing placemarks, paths, polygons, folders, and styling information.
.kmz
Zipped KML package often used in the broader KML ecosystem to bundle linked assets and compress delivery.
Conversion Rationale

Why convert KML to GeoJSON?

Teams commonly convert KML into GeoJSON when they need a web-friendly format that is easy to inspect and debug.

  • Teams convert KML when they need a format that is easier to query, edit, or combine with broader GIS datasets.
  • KML is also commonly converted out of presentation workflows and back into flat features for analytics, ETL, or archival storage.
  • GeoJSON is readable as plain text and widely supported in web mapping libraries and APIs.
  • It is a practical handoff format when you need to validate geometry and attributes quickly.
FAQ

Frequently asked questions about KML

When is KML the best choice?

KML is strongest when the goal is visual review or sharing overlays in Earth-browser tools instead of building a heavy analytical dataset.

Why do analysts often convert KML after receiving it?

They usually need a format that is easier to inspect as raw features, join to other data, or store in a database-style container.

Is KML good for large operational datasets?

It can work, but more compact or database-backed formats are usually better once scale, automation, or frequent editing matters.

Related Converters

More KML conversion paths

KML to GeoPackage
Open, preview, and convert KML data locally in your browser.
KML to ESRI Shapefile
Open, preview, and convert KML data locally in your browser.
GeoJSON & Shapefile Tools

More tools for working with your data

GeoJSON Viewer →
Open and inspect GeoJSON files on an interactive map with full attribute table support.
Shapefile Viewer →
Open SHP, DBF, SHX files directly in your browser with no upload.
GeoJSON Validator →
Validate GeoJSON for RFC 7946 compliance before publishing or sharing.

Format workflow cluster

More KML and GeoJSON workflows

Use the related viewer, tools, guides, and conversion paths to continue the same GIS task without losing the source format context.