How is this different from a radius or driving map?
A buffer follows uploaded geometry. A radius map draws circles around a center. A driving map uses a road network and travel time.
Free · Local file processing · No account
Buffer Points, Lines & Polygons Online
Draw a distance zone around a route, location or area, or inset a polygon for an approximate setback.
Loading the local file tool…
Loading the local file tool…
How to use this tool
- 1. Choose your geometry file.
- 2. Enter meters: positive to expand, negative to inset polygons.
- 3. Run, inspect the result and download GeoJSON.
Limits and checks before sharing
- Uses Turf buffer with 8 steps per quarter circle and a local projection approximation; unsuitable for legal or survey-grade setbacks.
- Negative distances require polygon input and can erase small polygons. Empty outputs are reported.
- GeometryCollection members become separate output features, each retaining the source attributes and ID.
- Large-area, dateline and polar geometry needs desktop GIS. This is a distance buffer, not a driving-time area.
If processing fails, check the file extension and source contents. Use a smaller batch if memory runs low. The original files are never overwritten. Inspect known locations and attributes before sharing a result.
Frequently asked questions
Are my files uploaded, and do I need an account?
No. This file operation runs in your browser and needs no account or payment. The page and processing libraries need an initial network load. Opening a map preview can request external map tiles; linked resources in your original KML are not fetched or embedded by this tool.
Continue with your result
Inspect outputs directly using the result button above. Choose a compatible next operation in the result panel to continue locally without downloading again. These related links open a fresh task. Share the downloaded file through your own channels; local files are not published to a hosted URL.