# @turf/transform-scale > Changes the size of a geometry by scaling it up or down. Latest version **7.4.0** (published 2026-08-03) · MIT license · 0 weekly downloads ## Install ```sh npm install @turf/transform-scale pnpm add @turf/transform-scale yarn add @turf/transform-scale bun add @turf/transform-scale ``` ## 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 | 2017-06-06 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | bundled | | Module format | ESM + CommonJS | | Dependencies | 12 | | Unpacked size | 37 KB | | Known vulnerabilities | 0 | | Install scripts | no | | Provenance | attested (GitHub Actions) | | GitHub stars | 10487 | | Author | Turf Authors | | Maintainers | rowanwins, tmcw, morganherlocker, tcql, mdfedderly, twelch, jamesmilneruk, morgan.herlocker | | Keywords | turf, transform, transformation, scale, enlarge, contract, zoom-in, zoom-out | ## Links - npm: https://www.npmjs.com/package/@turf/transform-scale - 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/transform-scale ## Dependencies (12) - [tslib](https://npm.io/package/tslib.md) ^2.8.1 - [@turf/bbox](https://npm.io/package/@turf/bbox.md) 7.4.0 - [@turf/meta](https://npm.io/package/@turf/meta.md) 7.4.0 - [@turf/clone](https://npm.io/package/@turf/clone.md) 7.4.0 - [@turf/center](https://npm.io/package/@turf/center.md) 7.4.0 - [@turf/helpers](https://npm.io/package/@turf/helpers.md) 7.4.0 - [@turf/centroid](https://npm.io/package/@turf/centroid.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 - [@turf/rhumb-bearing](https://npm.io/package/@turf/rhumb-bearing.md) 7.4.0 - [@turf/rhumb-distance](https://npm.io/package/@turf/rhumb-distance.md) 7.4.0 - [@turf/rhumb-destination](https://npm.io/package/@turf/rhumb-destination.md) 7.4.0 ## Alternatives - [mobx-react](https://npm.io/package/mobx-react.md) — 2.8M weekly downloads - [rc-tree](https://npm.io/package/rc-tree.md) — 2.6M weekly downloads - [@react-oauth/google](https://npm.io/package/@react-oauth/google.md) — 1.3M weekly downloads - [@wagmi/connectors](https://npm.io/package/@wagmi/connectors.md) — 877.0K weekly downloads - [vee-validate](https://npm.io/package/vee-validate.md) — 836.4K weekly downloads ## 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 - … 24 more at https://npm.io/package/@turf/transform-scale/versions ## README # @turf/transform-scale ## transformScale Scale GeoJSON objects from a given point by a scaling factor e.g. factor=2 would make each object 200% larger. If a FeatureCollection is provided, the origin point will be calculated based on each individual feature *unless* an exact ### Parameters * `geojson` **([GeoJSON][1] | [GeometryCollection][2])** objects to be scaled * `factor` **[number][3]** of scaling, positive values greater than 0. Numbers between 0 and 1 will shrink the geojson, numbers greater than 1 will expand it, a factor of 1 will not change the geojson. * `options` **[Object][4]** Optional parameters (optional, default `{}`) * `options.origin` **(Corners | [Coord][5])** Point from which the scaling will occur (string options: sw/se/nw/ne/center/centroid) (optional, default `'centroid'`) * `options.mutate` **[boolean][6]** allows GeoJSON input to be mutated (significant performance improvement if true) (optional, default `false`) ### Examples ```javascript const poly = turf.polygon([[[0,29],[3.5,29],[2.5,32],[0,29]]]); const scaledPoly = turf.transformScale(poly, 3); //addToMap const addToMap = [poly, scaledPoly]; scaledPoly.properties = {stroke: '#F00', 'stroke-width': 4}; ``` Returns **([GeoJSON][1] | [GeometryCollection][2])** scaled GeoJSON [1]: https://tools.ietf.org/html/rfc7946#section-3 [2]: https://tools.ietf.org/html/rfc7946#section-3.1.8 [3]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number [4]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object [5]: https://tools.ietf.org/html/rfc7946#section-3.1.1 [6]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean --- 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/transform-scale ``` 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/transform-scale · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._