# @turf/great-circle

> Calculate great circles routes as LineString or MultiLineString.

Latest version **7.4.0** (published 2026-08-03) · MIT license · 0 weekly downloads

## Install

```sh
npm install @turf/great-circle
pnpm add @turf/great-circle
yarn add @turf/great-circle
bun add @turf/great-circle
```

## Health

**Score 80/100 (A)** — status: active.

Positive: has types; esm support; no vulnerabilities; has provenance; recently updated; high maintenance score; high quality score; popular repo.

Warnings: low downloads.

## Facts

| | |
|---|---|
| Version | 7.4.0 |
| Published | 2026-08-03 |
| First published | 2017-03-12 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | ESM + CommonJS |
| Dependencies | 5 |
| Unpacked size | 17.5 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| Provenance | attested (GitHub Actions) |
| GitHub stars | 10491 |
| Author | Turf Authors |
| Maintainers | rowanwins, tmcw, morganherlocker, tcql, mdfedderly, twelch, jamesmilneruk, morgan.herlocker |
| Keywords | turf, arc, line, great, circle |

## Links

- npm: https://www.npmjs.com/package/@turf/great-circle
- Repository: https://github.com/Turfjs/turf
- Issues: https://github.com/Turfjs/turf/issues
- Funding: https://opencollective.com/turf
- npm.io page: https://npm.io/package/@turf/great-circle

## Dependencies (5)

- [arc](https://npm.io/package/arc.md) ^0.2.0
- [tslib](https://npm.io/package/tslib.md) ^2.8.1
- [@turf/helpers](https://npm.io/package/@turf/helpers.md) 7.4.0
- [@types/geojson](https://npm.io/package/@types/geojson.md) ^7946.0.10
- [@turf/invariant](https://npm.io/package/@turf/invariant.md) 7.4.0

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## Recent versions

- 7.4.0 (latest) — 2026-08-03
- 7.1.0-alpha.70 (prerelease) — 2024-08-09
- 7.3.5 — 2026-04-19
- 7.3.4 — 2026-02-08
- 7.3.3 — 2026-01-28
- 7.3.2 — 2026-01-14
- 7.3.1 — 2025-11-27
- 7.3.0 — 2025-11-17
- 7.2.0 — 2024-12-29
- 7.1.0 — 2024-08-09
- 7.1.0-alpha.7 — 2024-06-25
- 7.0.0 — 2024-06-07
- 7.0.0-alpha.116 — 2024-05-07
- 7.0.0-alpha.115 — 2024-04-23
- 7.0.0-alpha.114 — 2024-03-11
- … 35 more at https://npm.io/package/@turf/great-circle/versions

## README

# @turf/great-circle

<!-- Generated by documentation.js. Update this documentation by updating the source code. -->

## greatCircle

Calculate great circles routes as [LineString][1] or [MultiLineString][2].
If the `start` and `end` points span the antimeridian, the resulting feature will
be split into a `MultiLineString`. If the `start` and `end` positions are the same
then a `LineString` will be returned with duplicate coordinates the length of the `npoints` option.

### Parameters

*   `start` **[Coord][3]** source point feature
*   `end` **[Coord][3]** destination point feature
*   `options` **[Object][4]** Optional parameters (optional, default `{}`)

    *   `options.properties` **[Object][4]** line feature properties (optional, default `{}`)
    *   `options.npoints` **[number][5]** number of points (optional, default `100`)
    *   `options.offset` **[number][5]** offset controls the likelyhood that lines will
        be split which cross the dateline. The higher the number the more likely. (optional, default `10`)

### Examples

```javascript
var start = turf.point([-122, 48]);
var end = turf.point([-77, 39]);

var greatCircle = turf.greatCircle(start, end, {properties: {name: 'Seattle to DC'}});

//addToMap
var addToMap = [start, end, greatCircle]
```

Returns **[Feature][6]<([LineString][1] | [MultiLineString][2])>** great circle line feature

[1]: https://tools.ietf.org/html/rfc7946#section-3.1.4

[2]: https://tools.ietf.org/html/rfc7946#section-3.1.5

[3]: https://tools.ietf.org/html/rfc7946#section-3.1.1

[4]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object

[5]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number

[6]: https://tools.ietf.org/html/rfc7946#section-3.2

<!-- This file is automatically generated. Please don't edit it directly. If you find an error, edit the source file of the module in question (likely index.js or index.ts), and re-run "yarn docs" from the root of the turf project. -->

---

This module is part of the [Turfjs project](https://turfjs.org/), an open source module collection dedicated to geographic algorithms. It is maintained in the [Turfjs/turf](https://github.com/Turfjs/turf) repository, where you can create PRs and issues.

### Installation

Install this single module individually:

```sh
$ npm install @turf/great-circle
```

Or install the all-encompassing @turf/turf module that includes all modules as functions:

```sh
$ npm install @turf/turf
```

---
_Source: https://npm.io/package/@turf/great-circle · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._