# is-finite [](https://travis-ci.org/sindresorhus/is-finite) > ES2015 [`Number.isFinite()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isFinite) [ponyfill](https://ponyfill.com) ## Install ``` $ npm install is-finite ``` ## Usage ```js var numIsFinite = require('is-finite'); numIsFinite(4); //=> true numIsFinite(Infinity); //=> false ``` --- <div align="center"> <b> <a href="https://tidelift.com/subscription/pkg/npm-is-finite?utm_source=npm-is-finite&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a> </b> <br> <sub> Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies. </sub> </div>