KMZ files are common in network planning. They map buildings, fiber paths, and coverage zones in one view. Teams use them to share site data without losing layout or image files.

What is a KMZ file?

A KMZ file is a compressed file format that contains a KML file and its related assets, like images and icons. It’s a zip container that bundles geographic data (in KML) with any media referenced in that data. 

This format makes it easier to share complete mapping projects without breaking image links or file references.

Teams usually open KMZ files in Google Earth to view map paths and buildings, though QGIS and ArcGIS also support them. The KMZ file format is common in GIS, site planning, and telecom for sharing complete map packages.

KMZ vs. KML: What’s the difference?

A KML file is a readable XML file used to define geographic data, like map markers, paths, and polygons. You can open one in a text editor and see tags like <Placemark> and <coordinates>.

A KMZ file is a ZIP archive that includes one KML file (usually named doc.kml) and any related assets. Icons, ground overlays, or logos commonly appear as part of the map assets.

The chart below makes the differences between the features of KML vs. KMZ files more clear:

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Because everything’s bundled, KMZ is easier to share or archive. You won’t run into broken links or missing icons. Carriers send KMZ files to quote fiber routes or validate coverage.

What’s inside a .kmz file?

A KMZ file contains geographic data, images, and folder references used in mapping tools.

Coordinates, paths, and markers

The main file, doc.kml, defines points, lines, and shapes. Expect to see trench paths, fiber routes, building outlines, or access nodes.

Embedded imagery and icons

Files like .png or .jpg are often included. They appear as custom icons, logos, or overlay layers on the map.

Layered and grouped views

Users can sort map features into folders. That’s useful when working with large sites, multiple zones, or phased deployments.

Folder structure and file references

The required doc.kml sits at the top level of the KMZ. Any linked files must be inside the archive and use relative paths. Moving or deleting a referenced asset will break the map.

Optional extras

Some projects include timestamps, altitude settings, or links to live KML data. Most fiber teams skip those features unless GIS staff include them.

How are KMZ files used in network planning?

Telecom and fiber teams use KMZ files to plan, quote, and build efficiently. At Meter, we use them to speed up coverage checks and construction handoffs.

Fiber availability and route overlays

Fiber lines get mapped alongside building footprints to see which sites are already on-net. Quoting dedicated internet or leased line circuits goes faster without manual checks.

ISP feasibility

Carriers often send KMZs showing where they can deliver service. Teams speed up availability checks by layering that data directly over customer addresses.

Line-of-sight checks

Elevation markers in the KMZ help verify antenna paths for wireless links. Signal checks matter for rooftop installs or cross-building links.

Construction planning

Teams share KMZ files with engineers, contractors, and IT staff during trenching or riser work. All teams work from the same map. Shared maps reduce confusion and back-and-forth.

Shared files keep everyone aligned, especially during commercial network installation projects where timelines depend on coordination across multiple roles.

How to create a KMZ file in Google Earth

If you're wondering how to make a KMZ file, it only takes a few steps in Google Earth.

Step 1: Open Google Earth

Download Google Earth Pro for desktop. You can also use the web version at earth.google.com, but the desktop app gives you more control.

Step 2: Add your map data

Click the "Add Placemark" button to drop a pin on the map. Use it to mark buildings, towers, or fiber handoff points.

Click the "Path" tool to draw lines. That works for trench paths or aerial routes.

Use the "Polygon" tool to draw areas. That’s good for coverage zones or rooftop layouts.

Step 3: Save your KMZ

Look in the "Places" panel on the left. Right-click the folder or feature you created.

Click "Save Place As."

In the format dropdown, choose .kmz and save it to your computer.

Step 4: Build it manually (only if you need to)

Some teams create KMZ files by zipping everything by hand:

• Put a file called doc.kml at the root of the folder. The doc.kml file holds the main map data.
• Drop any images or icons you referenced into the same folder or into subfolders.
• Select all the files, zip them, and rename the extension to .kmz if needed.

The file is ready to send, open, or use in planning.

KMZ format compatibility and tools

Google Earth isn’t the only way to open or edit a KMZ file. Several mapping tools support the format and work well in fiber planning and GIS workflows.

Tools that support KMZ

1. Google Earth Pro works on a desktop. The web version works too but has fewer features.
2. QGIS is free and open source. It can read and edit KMZ files without any plugins.
3. ArcGIS is common in telecom and utility companies. Most large fiber providers use it.
4. Mapbox works for web-based map displays and can import KMZ files for basic visualizations.

Tools for converting formats

Teams sometimes convert KMZ files into KML, SHP, or GeoJSON formats. GDAL is a command-line tool that handles those conversions. MyGeodata is a web-based option that doesn’t require any setup.

Viewing KMZ files on mobile or in a browser

The Google Earth mobile app can open KMZ files directly. For browser access, upload the KMZ to Google Earth Web or share it through a cloud link. Most users can open it without needing to install anything.

Why KMZ files matter to ISPs and enterprises

KMZ files help teams quote faster, plan more accurately, and stay aligned during complex network builds.

Mapping on-net and off-net buildings

Carriers often send KMZ files that show which buildings they already serve. Teams can see missing coverage or areas that need support.

Planning fiber routes

Teams can map a full path from the carrier’s POP to the building entrance. Mapping helps estimate trench lengths, pole access, and conduit use.

Handoff between teams

Everyone involved gets the same file. Sales, engineers, and project managers all use one version of the map, which keeps planning consistent.

Working across skill levels

GIS users can work with KMZ files in detail, while IT managers can review them with ease. This makes it easier to review plans without switching tools or dealing with format issues.

Our team uses KMZ files often during enterprise network infrastructure rollouts. Sites vary in size and location, so fast, accurate visuals help everyone stay on track.

Using KMZ in fiber routing or site deployment

KMZ files help plan the physical details of a network build, especially during site surveys or multi-building deployments.

Overlay fiber paths

Start with a base map of the site or campus. Add fiber lines, drop points, or conduit paths to get a clear view of where the network should run.

Analyze proximity

Map overlays make it easy to measure how close the carrier’s network is to your location. Longer distances usually mean more time and higher build costs.

Estimate construction work

Use path tools to trace trench routes, utility runs, or aerial spans. Mark IDF (Intermediate Distribution Frame) and MDF (Main Distribution Frame) locations to scope internal work and rack placement.

Validate access points

Review building risers and easement access using visual layers. Access planning is especially important in older properties or buildings in dense areas.

How Meter Connect uses KMZ files

Carriers often send KMZ files during the quoting process. Our team uses them to check which buildings are near existing fiber.

Faster access to that data helps us confirm service availability without delays. This matters most during multi-site projects or dense metro deployments.

Once a project kicks off, we reuse the same KMZ file to brief contractors, building engineers, and client IT leads. Everyone works from the same source, which keeps planning tight.

KMZ files give us a simple way to share clear map data with all parties involved. No formatting issues, no lost context, and no confusion across teams.

Frequently asked questions

What does KMZ stand for?

KMZ stands for Keyhole Markup Language Zipped. A KMZ file is a compressed map file format that includes a KML file and its related assets.

Can I open a KMZ file without Google Earth?

Yes, you can open a KMZ file without Google Earth. Tools like QGIS, ArcGIS, and some browser-based viewers support the KMZ format, as long as they handle KML and KMZ standards.

What tools create or export KMZ files?

Google Earth Pro is the most common tool for creating or exporting KMZ files. QGIS and ArcGIS also support KMZ export, especially for GIS integration.

Why do fiber providers use KMZ files?

Fiber providers use KMZ files to show network coverage, fiber paths, and building access. This makes quoting and feasibility checks faster and more accurate.

What’s the easiest way to view a KMZ on a desktop?

The easiest way to view a KMZ on a desktop is with Google Earth Pro. It’s free to download and works on both Windows and macOS with no setup required.

How large can KMZ files get?

KMZ files are usually small (under 10MB). Files can get larger if they include many images or layered data, especially in multi-site projects.

Are KMZ files only used for maps?

KMZ files are not limited to maps. They can also include icons, images, overlays, and documentation used in planning or reporting.

How does Meter Connect use KMZ in connectivity planning?

Meter Connect uses KMZ files to check fiber proximity, map trench paths, and share deployment plans with contractors, IT teams, and partners.

Can I convert KMZ to another GIS format?

Yes, you can convert KMZ files to formats like KML, SHP, or GeoJSON using tools such as MyGeodata or GDAL, depending on your workflow needs.

Boost your network with a better ISP from Meter Connect

Many people don’t learn what a KMZ file is until they’re deep in the planning stages. This knowledge helps with mapping fiber routes, confirming service, or preparing site builds. Still, things move faster when you have the right support.

At Meter Connect, we read and interpret KMZ files every day. Carriers send them to show building reach, and we use that data to confirm availability and feasibility right away. You won’t wait around for someone to get back to you a week later.

We also handle more than just planning. Our team builds and manages enterprise networking solutions. We handle everything in-house, from carrier coordination to trenching to final equipment setup.

Some businesses prefer to manage vendors separately. Managing vendors separately often adds delays and handoffs. Our model cuts out the gaps. You get clear answers, faster timelines, and fewer surprises.

If your project needs mapped service or reliable internet, Meter Connect can help.

Request a quote from us today on Meter Connect.