Convert px to rem


Convert px to rem in css files with optional fallback to px.

This plugin requires Grunt ~0.4.2

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

npm install grunt-px-to-rem --save-dev

Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:


Type: Int Default value: 16

Base size

Type: bool Default value: false

Keep initial px values for fallback to browser who doesn't support rem.

Type: bool Default value: false

Create px fallback for existing rem units. (options.fallback needs to be true)

Type: array Default value: []

Array of properties that px-to-rem should ignore. Ex: ['border-left','border-top']

Type: Int Default value: 20

Set max decimals on rem values.

  px_to_rem: {
    dist: {
      options: {
        base: 16,
        fallback: false,
        fallback_existing_rem: false,
        ignore: []
      files: {
        'dest/style.css': ['src/style.css']
div {
  font-size: 16px; // Converts to rem
  border-left: 1pxi solid #000000; // Returns 1px (pxi = px important)