KML to SpatiaLite / SQLite

KML to SpatiaLite Converter Online | GeoDataViewer

Quick answer: Convert KML to SpatiaLite online for free. Open your KML data, inspect the map preview, and download SpatiaLite 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.

Before converting KML to SpatiaLite / SQLite

Prepare the input

Choose KML or KMZ with placemark geometry. KMZ is opened directly; conversion uses the selected main KML document, not every archive entry.

Know what you download

SpatiaLite / SQLite output is downloaded as a file, or ZIP when the driver generates sidecars. Compare the result against the source before sharing.

Download a real KML test file

Expected result: Three synthetic WGS 84 points near London: West point, East point and North point. Expect three points and compare their names and positions after conversion.

Limits and troubleshooting

Converting KML to SpatiaLite / SQLite 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.
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.

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 example Download 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.

Convert KML features to GeoJSON →

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 SpatiaLite online

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. Check the map preview

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

Run the conversion and save the generated SpatiaLite 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 SpatiaLite / SQLite?

Teams commonly convert KML into SpatiaLite / SQLite when they need a single-file spatial database with SQL querying and editing.

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.
SpatiaLite is a strong target when the next step is database-style filtering, joins, or offline analysis.
It offers more structure than flat files while staying easy to move between machines.

FAQ

Frequently asked questions about KML to SpatiaLite / SQLite

Can I convert KMZ directly to SpatiaLite / SQLite?

Yes. The KML converter accepts .kmz and reads its main KML document. Embedded images do not become vector geometry, and additional KML documents may not be included. Use KMZ to KML extraction when you need every document and asset.

Are ExtendedData and styles preserved in SpatiaLite / SQLite?

Readable KML attributes may appear in the destination fields, but field mapping depends on the driver and source schema. Compare important ExtendedData values in the exported file. KML style and presentation semantics are not guaranteed to survive.

Which KML geometries can become SpatiaLite / SQLite?

Start with placemark points, lines and polygons. Mixed geometry and application extensions depend on destination support; inspect all exported layers. Tours and GroundOverlays are not ordinary vector features.

What do I need before converting KML to SpatiaLite / SQLite?

Choose KML or KMZ with placemark geometry. KMZ is opened directly; conversion uses the selected main KML document, not every archive entry.

What exactly is in the SpatiaLite / SQLite download?

SpatiaLite / SQLite output is downloaded as a file, or ZIP when the driver generates sidecars. Compare the result against the source before sharing.

How large a KML 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 KML 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 KML conversion paths

KML to GeoJSON

Open, preview, and convert KML data locally in your browser.

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.

Format workflow cluster

More KML and SpatiaLite / SQLite workflows

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

KML / KMZ

Open Google Earth files and convert them for GIS, web maps, or CAD workflows.

GeoJSON

View, validate, edit, and convert web-ready GeoJSON data.

Shapefile

Open SHP packages, check sidecars and CRS, and modernize legacy GIS data.

GML

Read OGC Geography Markup Language, inspect features, and convert XML-based GIS data.

OSM PBF

Open small to medium OpenStreetMap PBF extracts and continue into GIS workflows.

DXF

Preview CAD drawings and convert DXF geometry for GIS and web mapping.