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File Geodatabase to KML

GDB to KML — FileGDB to Google Earth | GeoDataViewer

Quick answer: Convert GDB (FileGDB / File Geodatabase) layers to KML online for Google Earth and web maps. Select the geodatabase, inspect the preview, and download KML output in your browser.

Before converting File Geodatabase to KML

Prepare the input

Choose a complete File Geodatabase dataset (.zip, .gdbtable, .gdbtablx, .gdbindexes, .atx). Keep required sidecar files together and check the source coordinate reference system.

Know what you download

KML output is an XML geometry and attribute handoff for Google Earth. It is not an asset-complete KMZ and does not reproduce every original style or application extension.

Limits and troubleshooting
  • Converting File Geodatabase to KML can change field types, metadata and presentation. A successful download does not prove every source element survived.
  • KML styles, tours, overlays, remote links, icon assets and folder semantics may not survive geometry conversion. Retain the original for Google Earth presentation.
  • Confirm WGS 84 longitude/latitude placement in the downloaded output. Missing source CRS cannot be inferred safely; use a desktop GIS to assign or reproject an unknown CRS.
  • Browser memory varies by device. There is no guaranteed unlimited file size; split large datasets or use a desktop GIS when memory or WASM initialization fails.

If something goes wrong

  • Empty or partial preview: confirm the source contains supported vector geometry and compare the source layers with the preview.
  • Wrong continent or distorted geometry: inspect the source CRS, axis order and a known location. Valid syntax alone does not guarantee valid placement.
  • Conversion cannot start: reload while online so processing libraries and WebAssembly can load, then retry a smaller known-good sample. File contents are still processed locally.
  • Incomplete export: compare source/output counts, geometry families and key fields. Inspect warnings and keep the original file.
Task-specific workflow

Export FileGDB layers to KML

Use FileGDB to KML when a geodatabase feature class needs to be shared as a Google Earth layer or lightweight web-map overlay.

  • Select the feature class you want to export when the geodatabase contains multiple layers.
  • Preview the selected layer before conversion so the right geometry and attributes are carried forward.
  • KML preserves visual map geometry more reliably than a full FileGDB schema, so use it for sharing and review.
Source Format Guide

What is File Geodatabase?

File Geodatabase is an Esri geodatabase storage format that organizes datasets as a folder-based database instead of a single portable file.

FileGDB is widely used in ArcGIS environments because it can hold multiple feature classes, tables, and related content inside one geodatabase directory.

That structure is powerful inside Esri workflows, but it is less convenient than single-file formats for email, versioning, web uploads, and cross-platform sharing.

Common Workflows

Common use cases

  • Utility, government, environmental, and infrastructure projects built around ArcGIS desktop workflows.
  • Folder-based delivery of multiple feature classes and reference tables.
  • Intermediate storage before data is repackaged for portals, vendors, or web products.
Ecosystem

Where you will encounter it

  • ArcGIS desktop and geodatabase-centered enterprise workflows.
  • Multi-layer project packaging in Esri-heavy organizations.
  • Vendor deliveries where FileGDB is an accepted handoff format.
Strengths

Why teams choose File Geodatabase

  • Can hold multiple layers and related tables in one geodatabase structure.
  • Strong fit for ArcGIS workflows and geodatabase-oriented data management.
  • More expressive than simple flat exchange formats when the project is multi-layer.
Limitations

Where File Geodatabase gets awkward

  • FileGDB is a folder dataset, so it often needs zipping before transfer or browser upload.
  • Non-Esri workflows frequently prefer a more neutral or simpler delivery format.
  • The structure is less convenient for quick manual inspection than text or single-file containers.
Conversion steps

How to convert FileGDB to KML online

  1. 1. Add your FileGDB 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 KML

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

File Structure

Common file extensions and sidecar files

.gdb folder
Main geodatabase directory that contains tables, indexes, and supporting metadata files.
.gdbtable
Internal storage files used for tables and feature classes inside the geodatabase.
.gdbtablx
Internal index files that support geodatabase table access.
zipped .gdb folder
Common way to move a FileGDB through email, browsers, and archive systems that expect one transferable package.
Conversion Rationale

Why convert File Geodatabase to KML?

Teams commonly convert File Geodatabase into KML when they need easy sharing into Earth browsers and visualization-focused tools.

  • Teams convert FileGDB when data needs to move outside ArcGIS into open, web-friendly, or single-file formats.
  • Conversion is also common when recipients only need one layer rather than a full geodatabase folder structure.
  • KML is a common export target for Google Earth-style review, annotation, and presentation workflows.
  • It is well suited to map storytelling and visual inspection rather than heavy analytical editing.
FAQ

Frequently asked questions about File Geodatabase to KML

What do I need before converting File Geodatabase to KML?

Choose a complete File Geodatabase dataset (.zip, .gdbtable, .gdbtablx, .gdbindexes, .atx). Keep required sidecar files together and check the source coordinate reference system.

What exactly is in the KML download?

KML output is an XML geometry and attribute handoff for Google Earth. It is not an asset-complete KMZ and does not reproduce every original style or application extension.

How large a File Geodatabase file can I convert?

The practical limit depends on browser memory, geometry complexity and the conversion driver. Start with a small sample. There is no guaranteed unlimited size and no cloud fallback or payment tier for large files.

Are my File Geodatabase files sent to a server?

File parsing and conversion run on your device. The page, WebAssembly and map basemaps can make network requests; choosing a file does not upload its contents. Load the required libraries before attempting offline work.

Related Converters

More File Geodatabase conversion paths

File Geodatabase to GeoJSON
Open, preview, and convert File Geodatabase data locally in your browser.
File Geodatabase to GeoPackage
Open, preview, and convert File Geodatabase data locally in your browser.
File Geodatabase to ESRI Shapefile
Open, preview, and convert File Geodatabase data locally in your browser.

Format workflow cluster

More File Geodatabase and KML workflows

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