CX ConvertX
GIS

KML → CSV

Learn about the formats: What is KML?

At a glance

ConvertX.am converts KML files to CSV online, for free and without signing up. Upload a file of up to 500 MB and download the CSV result; uploaded and converted files are deleted automatically within about an hour.

Input:
KML
Output:
CSV
Price:
Free, no sign-up
File size:
Up to 500 MB
Your files:
Deleted automatically within about an hour

Convert geographic KML files into tabular CSV documents instantly with ConvertX. This tool bridges GIS data and standard text formats for analysts, developers, and GIS specialists.

KML (Keyhole Markup Language) is an XML-based format designed specifically for managing geographic visualization, including points, lines, and polygons in mapping software like Google Earth. CSV (Comma-Separated Values), on the other hand, is a universal tabular text format used for storing rows and columns of data. Converting from GIS to document format transforms spatial node coordinates and attributes into readable tabular text rows without altering the underlying coordinate values.

This conversion is strictly lossless because all geographic coordinates and attribute data are accurately mapped into text cells. The file size remains largely unchanged during the process.

Tips

Common use cases

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

No. The conversion is entirely lossless, preserving the exact numerical coordinates and attributes as text data.
The file size changes only insignificantly, as XML tags are replaced by comma-separated text structures.
Yes, CSV is a standard text format fully compatible with Excel, Google Sheets, and various database importers.

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