Need help with turf?
Click the “chat” button below for chat support from the developer who created it, or find similar developers for support.

About the developer

6.5K Stars 746 Forks MIT License 3.5K Commits 223 Opened issues


A modular geospatial engine written in JavaScript

Services available


Need anything else?

Contributors list


GitHub Actions Status Version Badge Gitter chat Backers on Open Collective Sponsors on Open Collective Coverage Status

A modular geospatial engine written in JavaScript

Turf is a JavaScript library for spatial analysis. It includes traditional spatial operations, helper functions for creating GeoJSON data, and data classification and statistics tools. Turf can be added to your website as a client-side plugin, or you can run Turf server-side with Node.js (see below).


In Node.js

# get all of turf
npm install @turf/turf

or get individual packages

npm install @turf/helpers npm install @turf/buffer

In browser

Download the minified file, and include it in a script tag. This will expose a global variable named


You can also include it directly from a CDN:


TypeScript definitions are packaged with each module. No DefinitelyTyped packages required.

Other languages

Ports of Turf.js are available in:

Data in Turf

Turf uses GeoJSON for all geographic data. Turf expects the data to be standard WGS84 longitude, latitude coordinates. Check out for a tool to easily create this data.

NOTE: Turf expects data in (longitude, latitude) order per the GeoJSON standard.

Most Turf functions work with GeoJSON features. These are pieces of data that represent a collection of properties (ie: population, elevation, zipcode, etc.) along with a geometry. GeoJSON has several geometry types such as:

  • Point
  • LineString
  • Polygon

Turf provides a few geometry functions of its own. These are nothing more than simple (and optional) wrappers that output plain old GeoJSON. For example, these two methods of creating a point are functionally equivalent:

// Note order: longitude, latitude.
var point1 = turf.point([-73.988214, 40.749128]);

var point2 = { type: 'Feature', geometry: { type: 'Point', // Note order: longitude, latitude. coordinates: [-73.988214, 40.749128] }, properties: {} };


This project exists thanks to all the people who contribute. If you are interested in helping, check out the Contributing Guide.


Thank you to all our backers! 🙏 [Become a backer]


Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]

We use cookies. If you continue to browse the site, you agree to the use of cookies. For more information on our use of cookies please see our Privacy Policy.