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Microsoft Excel to KML

Excel to KML — XLSX to Google Earth | GeoDataViewer

Quick answer: Convert Excel coordinate data to KML online for Google Earth, route planning, and map sharing. Preview the locations and download the KML file locally.

Before converting Microsoft Excel to KML

Prepare the input

Use a header row and explicit numeric longitude/latitude columns in decimal degrees. Addresses alone are not coordinates. For mixed DMS or reversed columns, clean the table first.

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.

Download a real Microsoft Excel test file

Expected result: Three synthetic WGS 84 locations near London with name, latitude and longitude columns. Expect three point features, then compare their names and positions.

Limits and troubleshooting
  • Converting Microsoft Excel 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

  • No points or wrong location: select numeric coordinate columns, check decimal versus DMS and verify longitude/latitude order. Use coordinate cleanup for uncertain input.
  • 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

Convert Excel coordinates to KML

Use Excel to KML when a spreadsheet of coordinate locations needs to become Google Earth placemarks. Start with the downloadable three-point XLSX example, then replace the rows with your own locations.

  • Provide numeric latitude and longitude columns in decimal degrees, with one record per location. Street addresses alone are not coordinates and are not geocoded by this converter.
  • Preview the points and expected row count before downloading. Remove blank coordinate rows and check for swapped latitude and longitude; keep useful names in a separate column.
  • Download the KML, open it in Google Earth, and inspect known placemarks and their attributes. Spreadsheet rows represent point locations; their order alone does not create a route or polygon.

Prepare your file and check the result

Before opening

Use a header row and one location per row, with numeric longitude and latitude columns in decimal degrees. Street addresses alone are not coordinates.

Before sharing or converting

Check the expected point count and known locations. Remove blank coordinate rows and confirm latitude/longitude have not been swapped.

Download a small XLSX example

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.

Source Format Guide

What is Microsoft Excel?

XLSX is the modern Microsoft Excel workbook format and is commonly used in geospatial workflows when the audience wants spreadsheet review more than a native geometry container.

Excel is often where stakeholders review, annotate, and exchange records, so spatial data frequently passes through XLSX even when the long-term working format is a GIS dataset.

A workbook becomes spatially useful only when sheets include coordinates, geometry text, or fields that another tool can interpret as location data.

Common Workflows

Common use cases

  • Asset inventories, inspection logs, and project lists with coordinate columns.
  • QA packages sent to non-GIS stakeholders for comments and corrections.
  • Import and export handoffs between GIS tools and spreadsheet-driven business processes.
Ecosystem

Where you will encounter it

  • Spreadsheet review and office workflows.
  • Business reporting, QA, and stakeholder feedback loops.
  • Lightweight tabular exchange between GIS and non-GIS teams.
Strengths

Why teams choose Microsoft Excel

  • Extremely familiar to non-GIS users and easy to review manually.
  • Multi-sheet workbook structure is convenient for tabular reporting.
  • Good final-delivery option when the recipient needs editable rows more than native geometry behavior.
Limitations

Where Microsoft Excel gets awkward

  • XLSX is not a true spatial format and does not natively model geometry the way GIS containers do.
  • Large automated pipelines are often easier to manage in simpler text or database-backed formats.
  • Spatial metadata, CRS information, and complex geometry handling are less explicit than in GIS-native outputs.
Conversion steps

How to convert XLSX to KML online

  1. 1. Add your XLSX 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

.xlsx
Main Excel workbook file that can contain one or more sheets of tabular data.
coordinate columns
Latitude, longitude, easting, northing, or similar fields that let GIS tools interpret spreadsheet rows spatially.
multiple sheets
Workbook structure that may separate tabs by theme, status, or export purpose.
Conversion Rationale

Why convert Microsoft Excel to KML?

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

  • Teams convert XLSX when spreadsheet rows need to become proper geometries in a map-ready format.
  • They also export into XLSX when stakeholders need an editable table for review instead of a specialized GIS file.
  • 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 Microsoft Excel to KML

What do I need before converting Microsoft Excel to KML?

Use a header row and explicit numeric longitude/latitude columns in decimal degrees. Addresses alone are not coordinates. For mixed DMS or reversed columns, clean the table first.

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 Microsoft Excel 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 Microsoft Excel 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.

Can I fix DMS, dirty cells or reversed latitude and longitude here?

Use the coordinate cleanup tool to choose the worksheet and columns, parse supported decimal/DMS values, review rejected rows and export KML or GeoJSON. Ambiguous coordinate order needs a known location; it is not silently guessed.

Related Converters

More Microsoft Excel conversion paths

Microsoft Excel to GeoJSON
Open, preview, and convert Microsoft Excel data locally in your browser.
Microsoft Excel to GeoPackage
Open, preview, and convert Microsoft Excel data locally in your browser.
Microsoft Excel to CSV
Open, preview, and convert Microsoft Excel data locally in your browser.

Format workflow cluster

More Microsoft Excel and KML workflows

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