Free • Fast • Private by default

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

Draw, fix, and export polygons without installing anything. Most workflows run directly in your browser.

WKTGeoJSONShapefileCSVWKBKMLKMZ

Open editor Browse converters Universal converter

Tip: bookmark /editor if you want the tool immediately.

Screenshot preview of the polygon editor

Runs locally

Edits and conversions happen in your browser.

Built for polygons

Union/subtract/buffer/simplify + clean exports.

The polygon editor

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

Draw & edit (map-based)

Create polygons on the map, rename items, toggle visibility, and manage a full geometry list.

Union / combine

Merge selected polygons into one (great for field boundaries and cleanup).

Subtract (draw or paste/file)

Cut one geometry from another—either by drawing the cut polygon or importing it.

Dissolve, split, strip/extract holes

Handle multiparts and interior rings cleanly without round-tripping through desktop GIS.

Undo/redo + safe editing lock

Separate global history and per-geometry edit sessions so you don’t accidentally destroy work.

Export WKT / GeoJSON / Shapefile

Export selection-only or everything. Shapefile ZIP includes WGS84 projection.

Privacy-first by default

The core workflow runs in-browser. If/when you use account features (save/send), it’s explicit.

Validation & fixes

Catch common geometry issues and apply fixes (duplicates, self-intersections, interior rings).

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 →