qrcode.chapril.org/vendor/wikimedia/less.php/lib/Less/Tree/UnitConversions.php

<?php
/**
 * @private
 */
class Less_Tree_UnitConversions {

	public static $groups = [ 'length','duration','angle' ];

	public static $length = [
		'm' => 1,
		'cm' => 0.01,
		'mm' => 0.001,
		'in' => 0.0254,
		'px' => 0.000264583, // 0.0254 / 96,
		'pt' => 0.000352778, // 0.0254 / 72,
		'pc' => 0.004233333, // 0.0254 / 72 * 12
		];

	public static $duration = [
		's' => 1,
		'ms' => 0.001
		];

	public static $angle = [
		'rad' => 0.1591549430919,	// 1/(2*M_PI),
		'deg' => 0.002777778, 		// 1/360,
		'grad' => 0.0025,			// 1/400,
		'turn' => 1
		];

}