Free Online GIS Analysis Tools
Professional-grade spatial analysis without the software cost. Analyse, validate, and extract insights from your geographic data — directly in your browser.
GIS Analysis Tools
KML Area Calculator
Calculate the geodesic area of any KML polygon in hectares, acres, or sq km. Matches ArcGIS accuracy.
Open tool →KML Editor / Earth Pro
Full-featured browser GIS: view, draw, edit, and analyse spatial data without desktop GIS software.
Open tool →Dissolve Tool
Merge adjacent or overlapping polygons that share a common attribute into unified shapes.
Open tool →Overlap Checker
Detect and report all polygon intersections and topology errors in your dataset.
Open tool →LULC Land Cover Report
Generate Land Use / Land Cover reports for any area using ESA Sentinel-2 10m data.
Open tool →Route Optimizer
Find the most efficient order to visit multiple stops using geodesic TSP algorithms.
Open tool →Batch Clipper
Clip multiple KML and GeoJSON layers to a single boundary polygon simultaneously.
Open tool →Raster Statistics
Compute mean, min, max, and sum of raster pixel values within your polygon zones.
Open tool →Attribute Data Analysis
Generate charts and frequency statistics from KML attribute tables without writing SQL.
Open tool →Browser GIS vs Desktop GIS
For most workflows, a browser-based tool is faster and cheaper. Here's when each makes sense.
| Feature | Browser GIS (This Site) | Desktop GIS (ArcGIS/QGIS) |
|---|---|---|
| Cost | Free | ArcGIS $1,500/yr, QGIS Free |
| Installation | None — open in tab | Download + install |
| Collaboration | Share link instantly | Export + email file |
| File size limit | Up to 100MB | Unlimited |
| Best for | Quick analysis, non-GIS users | Complex workflows, professionals |
Frequently Asked Questions
Can I do real GIS analysis in a browser?›
Yes. Browser-based GIS using WebAssembly and Turf.js can handle area calculation, buffer generation, spatial joins, dissolves, and topology checking with accuracy matching desktop GIS for most practical use cases.
What is the difference between a GIS analysis tool and a converter?›
Converters change file formats (KML to GeoJSON). Analysis tools process geographic data to extract insights — calculating area, finding overlaps, classifying land cover, or optimising routes.
Is my spatial data uploaded to your servers?›
No. All analysis runs locally in your browser. Coordinates and polygon data never leave your device.
What file formats do the analysis tools accept?›
All tools accept KML and KMZ. Most also accept GeoJSON. Raster tools accept GeoTIFF and PNG images.