GIS

GeoJSON → KML

Need the other direction? KML → GeoJSON →

Convert your spatial data from GeoJSON to KML format seamlessly. This tool is essential for GIS professionals and developers needing to display web-based map data in Google Earth.

GeoJSON is a lightweight, JSON-based format optimized for web APIs and browser-based mapping libraries. KML (Keyhole Markup Language), on the other hand, is an XML-based schema specifically designed for geographic visualization in Google Earth and Google Maps. During conversion, our tool maps GeoJSON geometry objects like Points, LineStrings, and Polygons into the corresponding KML placemarks and paths, preserving coordinate accuracy.

Coordinate precision is fully maintained during the transformation, ensuring that spatial vectors remain accurate for geospatial analysis.

Tips

Ensure your GeoJSON uses the standard WGS84 (EPSG:4326) coordinate system before converting.
Check for unclosed polygon rings in your GeoJSON file to avoid rendering errors in Google Earth.
Name your features in the 'name' property of the GeoJSON to ensure they appear labeled correctly in KML.

Common use cases

Preparing web-scraped map data for offline presentation in Google Earth.
Importing custom project boundaries into legacy GIS software that requires KML.
Creating 3D visualizations from web-based sensor tracking data.

Why ConvertX stays free — forever

We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.

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Free tools today — and always

Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.

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Privacy-first processing

Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.

File formats: what to choose

A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.

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GIS & maps

Geographic and spatial data layers.

Common extensions: GeoJSON, KML, SHP, GPX, GPKG

Advantages

+ GeoJSON is native to web maps
+ KML works with Google Earth
+ Shapefiles are common in GIS workflows

Disadvantages

− SHP needs multiple sidecar files
− Coordinate systems must match the target
− Large datasets need simplification

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Images

Raster and vector graphics for web, print, and photography.

Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF

Advantages

+ WebP and AVIF offer excellent compression for the web
+ PNG keeps transparency and sharp edges
+ SVG scales without quality loss

Disadvantages

− RAW and TIFF files are large and slow to share
− JPEG loses quality on every re-save
− Some formats are not supported in older browsers

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Documents

Office files, PDFs, ebooks, and plain text.

Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT

Advantages

+ PDF locks layout for printing and sharing
+ DOCX and ODT are easy to edit collaboratively
+ Plain text works on any device

Disadvantages

− PDF is hard to edit without special tools
− Complex layouts may shift after conversion
− Scanned PDFs need OCR for editable text

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Video

Clips, streams, screen recordings, and movies.

Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG

Advantages

+ MP4 (H.264/H.265) plays almost everywhere
+ WebM is efficient for web embedding
+ MKV can hold multiple audio and subtitle tracks

Disadvantages

− High-resolution video needs lots of storage and bandwidth
− Re-encoding always takes time and may reduce quality
− Some codecs require licensing for commercial use

Frequently asked questions

Standard geometry is converted perfectly, but custom GeoJSON styles (like stroke-width or color) may require manual adjustments in Google Earth after import.

Yes, KML is the native format for Google Earth and supports advanced features like 3D extrusion and tours, which GeoJSON does not.

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