ClearSKY FaviconClearSKY Polygon Tools
Free • Fast • Private by default

Polygon editor + converters for WKT, GeoJSON, Shapefile, KML & KMZ

Import, draw, fix, and export polygons without installing anything. Supports multiple formats and runs locally in your browser.

WKTGeoJSONShapefileCSVWKBKMLKMZ
Open editorBrowse convertersUniversal converter
Tip: bookmark /editor if you want the tool immediately.
Draw → clean → export
Runs locally
Built for polygons

The polygon editor

Everything you need to draw, clean, and export polygons.

Draw & manage geometries
Draw polygons, rename items, toggle visibility, and manage thousands of geometries.
Union / combine
Merge selected polygons into one (great for field boundaries and cleanup).
Subtract (draw or import)
Cut geometry from selected shapes — either by drawing the cut polygon or importing/pasting it.
Move mode (drag to reposition)
Toggle Move mode, click a polygon to select it, then drag to move the selection on the map.
Split & dissolve
Break multiparts apart, or dissolve selected shapes into clean single geometries.
Holes tools
Strip interior rings (holes) or extract them as new geometry when needed.
Transform tools
Buffer, simplify, and truncate coordinates for cleaner shapes and lighter files.
Quick export + Export dialog
Copy/download WKT + GeoJSON fast. Export Shapefile (.zip), KML, and KMZ (WGS84 lon/lat).
Undo/redo + safe editing lock
Separate global history and per-geometry edit sessions so you don’t accidentally destroy work.
Privacy-first by default
The core workflow runs in your browser. Nothing is uploaded unless you sign in to save or send geometries.
Validation & fixes
Catch common geometry issues and apply fixes (duplicates, self-intersections, ring closure, holes).

Converters

Open universal converter →
WKT → GeoJSON
Converter
Convert WKT to GeoJSON in your browser.
Open →
WKT → Shapefile
Converter
Convert WKT to Shapefile in your browser.
Open →
WKT → CSV
Converter
Convert WKT to CSV in your browser.
Open →
WKT → WKB
Converter
Convert WKT to WKB in your browser.
Open →
WKT → KMZ
Converter
Convert WKT to KMZ in your browser.
Open →
WKT → KML
Converter
Convert WKT to KML in your browser.
Open →
GeoJSON → WKT
Converter
Convert GeoJSON to WKT in your browser.
Open →
GeoJSON → Shapefile
Converter
Convert GeoJSON to Shapefile in your browser.
Open →
GeoJSON → CSV
Converter
Convert GeoJSON to CSV in your browser.
Open →
GeoJSON → WKB
Converter
Convert GeoJSON to WKB in your browser.
Open →
GeoJSON → KML
Converter
Convert GeoJSON to KML in your browser.
Open →
GeoJSON → KMZ
Converter
Convert GeoJSON to KMZ in your browser.
Open →
See all converters
Shapefile → WKT
Converter
Convert polygons quickly in the browser.
Open →
Shapefile → GeoJSON
Converter
Convert polygons quickly in the browser.
Open →
Shapefile → KML
Converter
Convert polygons quickly in the browser.
Open →
Shapefile → KMZ
Converter
Convert polygons quickly in the browser.
Open →
Shapefile → WKB
Converter
Convert polygons quickly in the browser.
Open →
Shapefile → CSV
Converter
Convert polygons quickly in the browser.
Open →
CSV → WKT
Converter
Convert polygons quickly in the browser.
Open →
CSV → GeoJSON
Converter
Convert polygons quickly in the browser.
Open →
CSV → Shapefile
Converter
Convert polygons quickly in the browser.
Open →
CSV → KML
Converter
Convert polygons quickly in the browser.
Open →
CSV → KMZ
Converter
Convert polygons quickly in the browser.
Open →
WKB → WKT
Converter
Convert polygons quickly in the browser.
Open →
WKB → GeoJSON
Converter
Convert polygons quickly in the browser.
Open →
WKB → Shapefile
Converter
Convert polygons quickly in the browser.
Open →
WKB → KML
Converter
Convert polygons quickly in the browser.
Open →
WKB → KMZ
Converter
Convert polygons quickly in the browser.
Open →
KMZ → Shapefile
Converter
Convert polygons quickly in the browser.
Open →
KMZ → GeoJSON
Converter
Convert polygons quickly in the browser.
Open →
KMZ → WKT
Converter
Convert polygons quickly in the browser.
Open →
KMZ → KML
Converter
Convert polygons quickly in the browser.
Open →
KMZ → CSV
Converter
Convert polygons quickly in the browser.
Open →
KML → KMZ
Converter
Convert polygons quickly in the browser.
Open →
KML → Shapefile
Converter
Convert polygons quickly in the browser.
Open →
KML → GeoJSON
Converter
Convert polygons quickly in the browser.
Open →
KML → WKT
Converter
Convert polygons quickly in the browser.
Open →
KML → CSV
Converter
Convert polygons quickly in the browser.
Open →

Utilities

WKT Validator
Utility
Validate WKT + common fixes
Open →
GeoJSON Validator
Utility
Validate GeoJSON polygons
Open →
Shapefile Reducer
Utility
Simplify big shapefiles fast
Open →
CRS Converter
Utility
Reproject between EPSG / UTM
Open →
WKB Viewer
Utility
Inspect WKB/EWKB (SRID), WKT + GeoJSON, map preview
Open →

Learn & support

Glossary
Site
Straight definitions + examples
Open →
Guides
Site
Practical fixes and conversions
Open →
FAQ
Site
Answers to common questions
Open →
About
Site
What this tool is for
Open →