diff --git a/phpgwapi/inc/class.egw_ckeditor_config.inc.php b/phpgwapi/inc/class.egw_ckeditor_config.inc.php
index c5f6c64309..305c1c091f 100644
--- a/phpgwapi/inc/class.egw_ckeditor_config.inc.php
+++ b/phpgwapi/inc/class.egw_ckeditor_config.inc.php
@@ -31,24 +31,27 @@ class egw_ckeditor_config
 		'Verdana, Geneva, sans-serif' => 'Verdana'
 	);
 	public static $font_size_options = array(
-		'8px'  => '8',
-		'9px'  => '9',
-		'10px' => '10',
-		'11px' => '11',
-		'12px' => '12',
-		'14px' => '14',
-		'16px' => '16',
-		'18px' => '18',
-		'20px' => '20',
-		'22px' => '22',
-		'24px' => '24',
-		'26px' => '26',
-		'28px' => '28',
-		'36px' => '36',
-		'48px' => '48',
-		'72px' => '72'
+		8  => '8',
+		9  => '9',
+		10 => '10',
+		11 => '11',
+		12 => '12',
+		14 => '14',
+		16 => '16',
+		18 => '18',
+		20 => '20',
+		22 => '22',
+		24 => '24',
+		26 => '26',
+		28 => '28',
+		36 => '36',
+		48 => '48',
+		72 => '72',
+	);
+	public static $font_unit_options = array(
+		'px' => 'px: display pixels',
+		'pt' => 'pt: points (1/72 inch)',
 	);
-
 
 	/**
 	 * Read language and country settings for the ckeditor and store them in static
@@ -197,6 +200,14 @@ class egw_ckeditor_config
 		$config['language'] = self::get_lang();
 		$config['enterMode'] = self::get_enter_mode();
 		$config['skin'] = self::get_skin();
+
+		$config['fontSize_sizes'] = '';
+		$unit = $GLOBALS['egw_info']['user']['preferences']['common']['rte_font_unit'];
+		if (empty($unit)) $unit = 'px';
+		foreach(self::$font_size_options as $k => $v)
+		{
+			$config['fontSize_sizes'] .= $v.'/'.$k.$unit.';';
+		}
 	}
 
 	/**
diff --git a/phpgwapi/inc/class.html.inc.php b/phpgwapi/inc/class.html.inc.php
index aadcad43ad..e8034b45c2 100644
--- a/phpgwapi/inc/class.html.inc.php
+++ b/phpgwapi/inc/class.html.inc.php
@@ -546,7 +546,7 @@ class html
 
 		// User preferences
 		$font = $GLOBALS['egw_info']['user']['preferences']['common']['rte_font'];
-+		$font_size = $GLOBALS['egw_info']['user']['preferences']['common']['rte_font_size'];
+		$font_size = (string)(int)$GLOBALS['egw_info']['user']['preferences']['common']['rte_font_size'];
 
 		// we need to enable double encoding here, as ckEditor has to undo one level of encoding
 		// otherwise < and > chars eg. from html markup entered in regular (not source) input, will turn into html!
@@ -1342,7 +1342,7 @@ class html
 		// User preferences
 		$font = $GLOBALS['egw_info']['user']['preferences']['common']['rte_font'];
 		$font_size = $GLOBALS['egw_info']['user']['preferences']['common']['rte_font_size'];
-		
+
 		// Check for "blank" = just user preference span - for some reason we can't match on the entity, so approximate
 		$regex = '#^<span style="font-family:'.$font.';font-size:'.$font_size.';">.?</span>$#us';
 		if(preg_match($regex,$html))
diff --git a/preferences/inc/class.preferences_hooks.inc.php b/preferences/inc/class.preferences_hooks.inc.php
index 80a5f42e53..e18d768c2e 100644
--- a/preferences/inc/class.preferences_hooks.inc.php
+++ b/preferences/inc/class.preferences_hooks.inc.php
@@ -97,6 +97,21 @@ class preferences_hooks
 			list(,$country) = explode('-',$lang);
 			if (empty($country)) $country = $lang;
 		}
+		// check for old rte_font_size pref including px and remove unit, px is default unit anyway
+		if (substr($GLOBALS['egw_info']['user']['preferences']['common']['rte_font_size'], -2) == 'px')
+		{
+			$prefs = new preferences($GLOBALS['egw_info']['user']['account_id']);
+			foreach(array('user','default','forced') as $type)
+			{
+				if (substr($prefs->{$type}['common']['rte_font_size'], -2) == 'px')
+				{
+					$prefs->{$type}['common']['rte_font_size'] = (string)(int)$prefs->{$type}['common']['rte_font_size'];
+					$prefs->save_repository(false, $type);
+				}
+			}
+			$GLOBALS['egw_info']['user']['preferences']['common']['rte_font_size'] =
+				(string)(int)$GLOBALS['egw_info']['user']['preferences']['common']['rte_font_size'];
+		}
 		// Settings array for this app
 		$settings = array(
 			array(
@@ -351,6 +366,16 @@ class preferences_hooks
 				'xmlrpc' => True,
 				'admin'  => false
 			),
+			'rte_font_unit' => array(
+				'type'   => 'select',
+				'label'  => 'Font size unit',
+				'name'   => 'rte_font_unit',
+				'values' => array_map('lang', egw_ckeditor_config::$font_unit_options),
+				'help'   => 'Unit of displayed font sizes: either "px" as used eg. for web-pages or "pt" as used in text processing.',
+				'default'=> 'px',
+				'xmlrpc' => True,
+				'admin'  => false
+			),
 			'rte_font_size' => array(
 				'type'   => 'select',
 				'label'  => 'Default font size',
diff --git a/preferences/lang/egw_de.lang b/preferences/lang/egw_de.lang
index ef3b65e83c..f441cd3bd3 100644
--- a/preferences/lang/egw_de.lang
+++ b/preferences/lang/egw_de.lang
@@ -44,6 +44,7 @@ enter your new password	preferences	de	Neues Passwort eingeben
 enter your old password	preferences	de	Altes Passwort eingeben
 failed to change password.  please contact your administrator.	preferences	de	Passwortänderung fehlgeschlagen. Bitte kontaktieren Sie Ihren Administrator!
 features of the editor	preferences	de	Funktionsauswahl des Editors
+font size unit	preferences	de	Einheit der Schriftgröße
 forced preferences	preferences	de	Erzwungene Einstellungen
 formatting & general settings	preferences	de	Formatierung & allgemeine Einstellungen
 help off	preferences	de	Keine Hilfe
@@ -81,6 +82,8 @@ please select timezones, you want to be able to quickly switch between. switch i
 please select your timezone.	preferences	de	Bitte wählen Sie Ihre Zeitzone
 please, select a new theme	preferences	de	Bitte ein neues Schema wählen
 popup with search	preferences	de	Pop-up mit Suche
+pt: points (1/72 inch)	preferences	de	pt: Punkt (1/72 Inch)
+px: display pixels	preferences	de	px: Bildschirmpixel
 re-enter your password	preferences	de	Neues Passwort wiederholen
 read prefs for the specified application.	preferences	de	Liest Einstellungen von den ausgewählten Anwendungen.
 rich text editor enter mode	preferences	de	Zeilenumbruchmodus des Editors
@@ -119,6 +122,7 @@ theme (colors/fonts) selection	preferences	de	Auswahl des Themas (Farben/Schrift
 this server is located in the %1 timezone	preferences	de	Der Server befindet sich in der Zeitzone %1
 thousands separator is only used for displaying and not for editing numbers.	preferences	de	Tausender Trennzeichen werden nur zur Anzeige benutzt, aber nicht, zum bearbeiten von Zahlen.
 time format	preferences	de	Zeitformat
+unit of displayed font sizes: either "px" as used eg. for web-pages or "pt" as used in text processing.	preferences	de	Einzeit für angezeigte Schriftgrößen: entweder "px" wie z.B. bei Webseiten verwendet oder "pt" wie in der Textverarbeitung üblich
 use default	preferences	de	Vorgabe benutzen
 users choice	preferences	de	Benutzerauswahl
 when you say yes the home and logout buttons are presented as applications in the main top applcation bar.	preferences	de	Wenn Sie hier Ja auswählen, werden in der Hauptnavigationsleiste oben zusätzlich Buttons für die Startseite und zum Abmelden angezeigt.
diff --git a/preferences/lang/egw_en.lang b/preferences/lang/egw_en.lang
index b69e68b87f..5da80997ba 100644
--- a/preferences/lang/egw_en.lang
+++ b/preferences/lang/egw_en.lang
@@ -44,6 +44,7 @@ enter your new password	preferences	en	Enter new password
 enter your old password	preferences	en	Enter old password
 failed to change password.  please contact your administrator.	preferences	en	Failed to change password. Contact your administrator.
 features of the editor	preferences	en	Features of the editor
+font size unit	preferences	en	Font size unit
 forced preferences	preferences	en	Forced preferences
 formatting & general settings	preferences	en	Formatting & general settings
 help off	preferences	en	Help off
@@ -81,6 +82,8 @@ please select timezones, you want to be able to quickly switch between. switch i
 please select your timezone.	preferences	en	Select your time zone.
 please, select a new theme	preferences	en	Select a new theme
 popup with search	preferences	en	Popup with search
+pt: points (1/72 inch)	preferences	en	pt: points (1/72 inch)
+px: display pixels	preferences	en	px: display pixels
 re-enter your password	preferences	en	Re-enter your password
 read prefs for the specified application.	preferences	en	Read preferences for the specified application.
 rich text editor enter mode	preferences	en	Rich text editor enter mode
@@ -119,6 +122,7 @@ theme (colors/fonts) selection	preferences	en	Theme
 this server is located in the %1 timezone	preferences	en	This server is located in the %1 time zone
 thousands separator is only used for displaying and not for editing numbers.	preferences	en	Thousands separator is only used for displaying and not for editing numbers.
 time format	preferences	en	Time format
+unit of displayed font sizes: either "px" as used eg. for web-pages or "pt" as used in text processing.	preferences	en	Unit of displayed font sizes: either "px" as used eg. for web-pages or "pt" as used in text processing.
 use default	preferences	en	Use default
 users choice	preferences	en	Users choice
 when you say yes the home and logout buttons are presented as applications in the main top applcation bar.	preferences	en	Show Home and Logout buttons as applications in the top bar.