Curated list · updated 2 November 2026
Best Free GIS Tools for Beginners
Before reaching for a desktop GIS, open the file in a browser viewer — most 'broken' files are a coordinate-order or delimiter problem.
A full GIS application is the right tool for editing topology, running spatial joins and managing layers. It is the wrong tool for answering 'is this file okay?', which is the question that stops most beginners on day one.
These browser tools cover that first hour: open the file, check what is in it, convert it if you need another format, and measure something to confirm the coordinates mean what you think they mean.
- 1
GeoJSON Viewer
Drop a GeoJSON file and see the geometry, feature count and property keys.
- 2
KML Viewer
Open KML or KMZ placemarks and paths without Google Earth.
- 3
GPX Viewer
Read a recorded track with timestamps, elevation and point counts.
- 4
GeoJSON Validator
Catch coordinate-order problems and structural errors before they reach a map library.
- 5
CSV to Map
Turn a spreadsheet into points, with column detection you can override.
- 6
GPX to CSV Converter
Get track points into a spreadsheet for analysis or a report.
- 7
How this list was chosen
Ordered by the sequence a beginner actually follows: open, verify, convert, measure. All processing happens in the browser, so nothing needs to be uploaded.
MapBench is a single site, so this is a recommendation list rather than an independent market survey. Every listed tool is free, needs no account, and publishes the method behind its result.
Browse the full clusters
Read before you rely on the number
- KML vs. GeoJSON vs. GPX: Choosing the Right Map File Format
The practical differences between three common geographic file formats — when to use each, what can be lost in conversion, and how to move between them.
- Understanding GPS Coordinates: Formats, Datums and Precision
A practical guide to latitude/longitude: what decimal degrees and DMS really mean, why datums matter, and how many decimal places you actually need.
- How to Measure Land Area on a Map: Acres, Hectares and Square Feet
Learn how map-based area measurement works, how to trace a parcel more accurately, how acres and hectares relate, and when an online estimate is not enough.
Common questions
Do I need to install anything?
No. These run in a modern browser and read files locally from your device.
What file format should I start with?
GeoJSON if you are working with web maps, GPX if the data is a recorded track, and CSV if it came out of a spreadsheet. The KML vs GeoJSON vs GPX guide explains the trade-offs.