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.kml

KML / KMZ Viewer

Learn what KML is used for, why it is popular for Earth-browser visualization, and when teams convert it into more analysis-friendly GIS formats.

View your KML/KMZ tracks and points on a modern map.
All processing runs locally in your browser.

KML / KMZ

View your KML/KMZ tracks and points on a modern map.

How to open KML / KMZ online

Open KML and KMZ files from Google Earth online. View your KML/KMZ tracks and points on a modern map.

Privacy

Files are processed on your device in the browser. GeoDataViewer does not upload your datasets to a server for viewing.

Common issues

If a dataset uses multiple required sidecar files, make sure you provide the complete set together. For best results, keep all sidecars in one zip archive when applicable.

Related tools

Measure distances, areas, elevation, and radius circles using the tools menu, then come back to inspect your KML / KMZ layer on the map.

What is KML / KMZ?

KML is an XML-based format closely associated with Earth-browser visualization, annotation, and map presentation workflows.

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.

What is KML / KMZ used for?

  • Sharing map content with Google Earth-style viewers and other presentation-focused tools.
  • Publishing lightweight overlays with labels, folders, and basic styling for visual review.
  • Moving hand-authored placemarks, paths, and simple thematic layers between consumer and GIS environments.

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.

Strengths

  • 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

  • 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.

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.

Convert KML online

KML to CSV
Open, preview, and convert KML locally in your browser.
KML to AutoCAD DXF
Open, preview, and convert KML locally in your browser.
KML to FlatGeobuf
Open, preview, and convert KML locally in your browser.
KML to File Geodatabase
Open, preview, and convert KML locally in your browser.
KML to GeoJSON
Open, preview, and convert KML locally in your browser.
KML to GeoRSS
Open, preview, and convert KML locally in your browser.
KML to GML
Open, preview, and convert KML locally in your browser.
KML to GeoPackage
Open, preview, and convert KML locally in your browser.
KML to GPX
Open, preview, and convert KML locally in your browser.
KML to JSON-FG
Open, preview, and convert KML locally in your browser.
KML to MapInfo
Open, preview, and convert KML locally in your browser.
KML to MBTiles
Open, preview, and convert KML locally in your browser.

KML / KMZ Viewer FAQ

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.