diff --git a/src/calibre/gui2/convert/lrf_output.ui b/src/calibre/gui2/convert/lrf_output.ui
index 7ba724ca58..f00fa907b2 100644
--- a/src/calibre/gui2/convert/lrf_output.ui
+++ b/src/calibre/gui2/convert/lrf_output.ui
@@ -13,137 +13,88 @@
   <property name="windowTitle">
    <string>Form</string>
   </property>
-  <layout class="QVBoxLayout" name="verticalLayout">
-   <item>
+  <layout class="QFormLayout" name="formLayout">
+   <item row="0" column="0" colspan="2">
     <widget class="QCheckBox" name="opt_autorotation">
      <property name="text">
       <string>Enable &amp;auto-rotation of wide images</string>
      </property>
     </widget>
    </item>
-   <item>
-    <layout class="QHBoxLayout" name="horizontalLayout">
-     <item>
-      <widget class="QLabel" name="label">
-       <property name="text">
-        <string>&amp;Wordspace:</string>
-       </property>
-       <property name="buddy">
-        <cstring>opt_wordspace</cstring>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QDoubleSpinBox" name="opt_wordspace">
-       <property name="suffix">
-        <string> pt</string>
-       </property>
-       <property name="decimals">
-        <number>1</number>
-       </property>
-       <property name="minimum">
-        <double>1.000000000000000</double>
-       </property>
-       <property name="maximum">
-        <double>20.000000000000000</double>
-       </property>
-       <property name="value">
-        <double>2.500000000000000</double>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QLabel" name="label_2">
-       <property name="text">
-        <string>Minimum para. &amp;indent:</string>
-       </property>
-       <property name="buddy">
-        <cstring>opt_minimum_indent</cstring>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QDoubleSpinBox" name="opt_minimum_indent">
-       <property name="suffix">
-        <string> pt</string>
-       </property>
-       <property name="decimals">
-        <number>1</number>
-       </property>
-      </widget>
-     </item>
-    </layout>
+   <item row="3" column="1">
+    <widget class="QDoubleSpinBox" name="opt_wordspace">
+     <property name="suffix">
+      <string> pt</string>
+     </property>
+     <property name="decimals">
+      <number>1</number>
+     </property>
+     <property name="minimum">
+      <double>1.000000000000000</double>
+     </property>
+     <property name="maximum">
+      <double>20.000000000000000</double>
+     </property>
+     <property name="value">
+      <double>2.500000000000000</double>
+     </property>
+    </widget>
    </item>
-   <item>
+   <item row="5" column="1">
+    <widget class="QDoubleSpinBox" name="opt_minimum_indent">
+     <property name="suffix">
+      <string> pt</string>
+     </property>
+     <property name="decimals">
+      <number>1</number>
+     </property>
+    </widget>
+   </item>
+   <item row="6" column="0" colspan="2">
     <widget class="QCheckBox" name="opt_render_tables_as_images">
      <property name="text">
       <string>Render &amp;tables as images</string>
      </property>
     </widget>
    </item>
-   <item>
-    <layout class="QHBoxLayout" name="horizontalLayout_2">
-     <item>
-      <widget class="QLabel" name="label_3">
-       <property name="text">
-        <string>Text size multiplier for text in rendered tables:</string>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QDoubleSpinBox" name="opt_text_size_multiplier_for_rendered_tables"/>
-     </item>
-    </layout>
+   <item row="10" column="1">
+    <widget class="QDoubleSpinBox" name="opt_text_size_multiplier_for_rendered_tables"/>
    </item>
-   <item>
-    <layout class="QGridLayout" name="gridLayout">
-     <item row="0" column="0" colspan="2">
-      <widget class="QCheckBox" name="opt_header">
-       <property name="text">
-        <string>Add &amp;header</string>
-       </property>
-      </widget>
-     </item>
-     <item row="1" column="0" colspan="2">
-      <widget class="QLabel" name="label_4">
-       <property name="text">
-        <string>Header &amp;separation:</string>
-       </property>
-       <property name="buddy">
-        <cstring>opt_header_separation</cstring>
-       </property>
-      </widget>
-     </item>
-     <item row="1" column="2">
-      <widget class="QDoubleSpinBox" name="opt_header_separation">
-       <property name="suffix">
-        <string> pt</string>
-       </property>
-       <property name="decimals">
-        <number>1</number>
-       </property>
-      </widget>
-     </item>
-     <item row="2" column="0">
-      <widget class="QLabel" name="label_5">
-       <property name="text">
-        <string>Header &amp;format:</string>
-       </property>
-       <property name="buddy">
-        <cstring>opt_header_format</cstring>
-       </property>
-      </widget>
-     </item>
-     <item row="2" column="1" colspan="2">
-      <widget class="QLineEdit" name="opt_header_format">
-       <property name="clearButtonEnabled">
-        <bool>true</bool>
-       </property>
-      </widget>
-     </item>
-    </layout>
+   <item row="11" column="0" colspan="2">
+    <widget class="QCheckBox" name="opt_header">
+     <property name="text">
+      <string>Add &amp;header</string>
+     </property>
+    </widget>
    </item>
-   <item>
+   <item row="13" column="1">
+    <widget class="QDoubleSpinBox" name="opt_header_separation">
+     <property name="suffix">
+      <string> pt</string>
+     </property>
+     <property name="decimals">
+      <number>1</number>
+     </property>
+    </widget>
+   </item>
+   <item row="14" column="0">
+    <widget class="QLabel" name="label_5">
+     <property name="text">
+      <string>Header &amp;format:</string>
+     </property>
+     <property name="buddy">
+      <cstring>opt_header_format</cstring>
+     </property>
+    </widget>
+   </item>
+   <item row="14" column="1">
+    <widget class="QLineEdit" name="opt_header_format">
+     <property name="clearButtonEnabled">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="16" column="0" colspan="2">
     <widget class="QGroupBox" name="groupBox">
      <property name="title">
       <string>&amp;Embed fonts</string>
@@ -191,7 +142,7 @@
      </layout>
     </widget>
    </item>
-   <item>
+   <item row="18" column="0">
     <spacer name="verticalSpacer">
      <property name="orientation">
       <enum>Qt::Vertical</enum>
@@ -204,6 +155,43 @@
      </property>
     </spacer>
    </item>
+   <item row="13" column="0">
+    <widget class="QLabel" name="label_4">
+     <property name="text">
+      <string>Header &amp;separation:</string>
+     </property>
+     <property name="buddy">
+      <cstring>opt_header_separation</cstring>
+     </property>
+    </widget>
+   </item>
+   <item row="10" column="0">
+    <widget class="QLabel" name="label_3">
+     <property name="text">
+      <string>Text size multiplier for text in rendered tables:</string>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="0">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>&amp;Wordspace:</string>
+     </property>
+     <property name="buddy">
+      <cstring>opt_wordspace</cstring>
+     </property>
+    </widget>
+   </item>
+   <item row="5" column="0">
+    <widget class="QLabel" name="label_2">
+     <property name="text">
+      <string>Minimum para. &amp;indent:</string>
+     </property>
+     <property name="buddy">
+      <cstring>opt_minimum_indent</cstring>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <customwidgets>
diff --git a/src/calibre/gui2/convert/mobi_output.ui b/src/calibre/gui2/convert/mobi_output.ui
index 93e4e6afd4..f74c52489c 100644
--- a/src/calibre/gui2/convert/mobi_output.ui
+++ b/src/calibre/gui2/convert/mobi_output.ui
@@ -13,75 +13,76 @@
   <property name="windowTitle">
    <string>Form</string>
   </property>
-  <layout class="QGridLayout" name="gridLayout">
-   <item row="0" column="0">
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
     <widget class="QCheckBox" name="opt_no_inline_toc">
      <property name="text">
       <string>Do not add &amp;Table of Contents to book</string>
      </property>
     </widget>
    </item>
-   <item row="1" column="0">
-    <widget class="QLabel" name="label">
-     <property name="text">
-      <string>&amp;Title for Table of Contents:</string>
-     </property>
-     <property name="buddy">
-      <cstring>opt_toc_title</cstring>
-     </property>
-    </widget>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QLabel" name="label">
+       <property name="text">
+        <string>&amp;Title for Table of Contents:</string>
+       </property>
+       <property name="buddy">
+        <cstring>opt_toc_title</cstring>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLineEdit" name="opt_toc_title">
+       <property name="clearButtonEnabled">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+    </layout>
    </item>
-   <item row="1" column="1">
-    <widget class="QLineEdit" name="opt_toc_title">
-     <property name="clearButtonEnabled">
-      <bool>true</bool>
-     </property>
-    </widget>
-   </item>
-   <item row="2" column="0" colspan="2">
+   <item>
     <widget class="QCheckBox" name="opt_mobi_toc_at_start">
      <property name="text">
       <string>Put generated Table of Contents at &amp;start of book instead of end</string>
      </property>
     </widget>
    </item>
-   <item row="3" column="0">
+   <item>
     <widget class="QCheckBox" name="opt_mobi_ignore_margins">
      <property name="text">
       <string>Ignore &amp;margins</string>
      </property>
     </widget>
    </item>
-   <item row="4" column="0">
+   <item>
     <widget class="QCheckBox" name="opt_prefer_author_sort">
      <property name="text">
       <string>Use author &amp;sort for author</string>
      </property>
     </widget>
    </item>
-   <item row="5" column="0" colspan="2">
+   <item>
     <widget class="QCheckBox" name="opt_mobi_keep_original_images">
      <property name="text">
       <string>Do not convert all images to &amp;JPEG (may result in images not working in older viewers)</string>
      </property>
     </widget>
    </item>
-   <item row="6" column="0">
+   <item>
     <widget class="QCheckBox" name="opt_dont_compress">
      <property name="text">
       <string>Disable &amp;compression of the file contents</string>
      </property>
     </widget>
    </item>
-   <item row="7" column="0" colspan="2">
+   <item>
     <widget class="QGroupBox" name="groupBox">
      <property name="title">
       <string>Kindle options</string>
      </property>
      <layout class="QFormLayout" name="formLayout">
-      <property name="fieldGrowthPolicy">
-       <enum>QFormLayout::ExpandingFieldsGrow</enum>
-      </property>
       <item row="0" column="0">
        <widget class="QLabel" name="label_2">
         <property name="text">
@@ -93,30 +94,16 @@
        </widget>
       </item>
       <item row="0" column="1">
-       <widget class="QComboBox" name="opt_mobi_file_type"/>
-      </item>
-      <item row="3" column="0">
-       <widget class="QLabel" name="label_3">
-        <property name="text">
-         <string>Personal Doc tag:</string>
+       <widget class="QComboBox" name="opt_mobi_file_type">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
         </property>
        </widget>
       </item>
-      <item row="3" column="1">
-       <widget class="QLineEdit" name="opt_personal_doc">
-        <property name="clearButtonEnabled">
-         <bool>true</bool>
-        </property>
-       </widget>
-      </item>
-      <item row="4" column="0" colspan="2">
-       <widget class="QCheckBox" name="opt_share_not_sync">
-        <property name="text">
-         <string>Enable &amp;sharing of book content via Facebook, etc. WARNING: Disables last read syncing</string>
-        </property>
-       </widget>
-      </item>
-      <item row="2" column="0" colspan="2">
+      <item row="1" column="0" colspan="2">
        <widget class="QLabel" name="label_4">
         <property name="text">
          <string>&lt;b&gt;WARNING:&lt;/b&gt; Various Kindle devices have trouble displaying the new or both MOBI filetypes. If you wish to use the new format on your device, convert to AZW3 instead of MOBI.</string>
@@ -126,9 +113,43 @@
         </property>
        </widget>
       </item>
+      <item row="2" column="0">
+       <widget class="QLabel" name="label_3">
+        <property name="text">
+         <string>Personal Doc tag:</string>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="1">
+       <widget class="QLineEdit" name="opt_personal_doc">
+        <property name="clearButtonEnabled">
+         <bool>true</bool>
+        </property>
+       </widget>
+      </item>
+      <item row="3" column="0" colspan="2">
+       <widget class="QCheckBox" name="opt_share_not_sync">
+        <property name="text">
+         <string>Enable &amp;sharing of book content via Facebook, etc. WARNING: Disables last read syncing</string>
+        </property>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
   </layout>
  </widget>
  <resources/>
diff --git a/src/calibre/gui2/convert/pdb_output.ui b/src/calibre/gui2/convert/pdb_output.ui
index cdaca79c8d..9524a421bd 100644
--- a/src/calibre/gui2/convert/pdb_output.ui
+++ b/src/calibre/gui2/convert/pdb_output.ui
@@ -13,7 +13,7 @@
   <property name="windowTitle">
    <string>Form</string>
   </property>
-  <layout class="QGridLayout" name="gridLayout">
+  <layout class="QFormLayout" name="formLayout">
    <item row="0" column="0">
     <widget class="QLabel" name="label">
      <property name="text">
@@ -27,26 +27,6 @@
    <item row="0" column="1">
     <widget class="QComboBox" name="opt_format"/>
    </item>
-   <item row="3" column="0">
-    <spacer name="verticalSpacer">
-     <property name="orientation">
-      <enum>Qt::Vertical</enum>
-     </property>
-     <property name="sizeHint" stdset="0">
-      <size>
-       <width>148</width>
-       <height>246</height>
-      </size>
-     </property>
-    </spacer>
-   </item>
-   <item row="2" column="0">
-    <widget class="QCheckBox" name="opt_inline_toc">
-     <property name="text">
-      <string>&amp;Inline TOC</string>
-     </property>
-    </widget>
-   </item>
    <item row="1" column="0">
     <widget class="QLabel" name="label_2">
      <property name="text">
@@ -64,6 +44,26 @@
      </property>
     </widget>
    </item>
+   <item row="2" column="0">
+    <widget class="QCheckBox" name="opt_inline_toc">
+     <property name="text">
+      <string>&amp;Inline TOC</string>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="0">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>148</width>
+       <height>246</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
   </layout>
  </widget>
  <customwidgets>
diff --git a/src/calibre/gui2/convert/pmlz_output.ui b/src/calibre/gui2/convert/pmlz_output.ui
index 85b6d12777..5cbe2e22ce 100644
--- a/src/calibre/gui2/convert/pmlz_output.ui
+++ b/src/calibre/gui2/convert/pmlz_output.ui
@@ -13,8 +13,39 @@
   <property name="windowTitle">
    <string>Form</string>
   </property>
-  <layout class="QGridLayout" name="gridLayout">
-   <item row="4" column="0">
+  <layout class="QFormLayout" name="formLayout">
+   <item row="0" column="0">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Output &amp;encoding:</string>
+     </property>
+     <property name="buddy">
+      <cstring>opt_pml_output_encoding</cstring>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="1">
+    <widget class="EncodingComboBox" name="opt_pml_output_encoding">
+     <property name="editable">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <widget class="QCheckBox" name="opt_inline_toc">
+     <property name="text">
+      <string>&amp;Inline TOC</string>
+     </property>
+    </widget>
+   </item>
+   <item row="2" column="0" colspan="2">
+    <widget class="QCheckBox" name="opt_full_image_depth">
+     <property name="text">
+      <string>Do not &amp;reduce image size and depth</string>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="0">
     <spacer name="verticalSpacer">
      <property name="orientation">
       <enum>Qt::Vertical</enum>
@@ -27,41 +58,6 @@
      </property>
     </spacer>
    </item>
-   <item row="2" column="0">
-    <widget class="QCheckBox" name="opt_inline_toc">
-     <property name="text">
-      <string>&amp;Inline TOC</string>
-     </property>
-    </widget>
-   </item>
-   <item row="3" column="0">
-    <widget class="QCheckBox" name="opt_full_image_depth">
-     <property name="text">
-      <string>Do not &amp;reduce image size and depth</string>
-     </property>
-    </widget>
-   </item>
-   <item row="1" column="0">
-    <layout class="QHBoxLayout" name="horizontalLayout">
-     <item>
-      <widget class="QLabel" name="label">
-       <property name="text">
-        <string>Output &amp;encoding:</string>
-       </property>
-       <property name="buddy">
-        <cstring>opt_pml_output_encoding</cstring>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="EncodingComboBox" name="opt_pml_output_encoding">
-       <property name="editable">
-        <bool>true</bool>
-       </property>
-      </widget>
-     </item>
-    </layout>
-   </item>
   </layout>
  </widget>
  <customwidgets>
diff --git a/src/calibre/gui2/convert/txt_output.ui b/src/calibre/gui2/convert/txt_output.ui
index 560d501d45..035a019c4f 100644
--- a/src/calibre/gui2/convert/txt_output.ui
+++ b/src/calibre/gui2/convert/txt_output.ui
@@ -19,7 +19,7 @@
      <property name="title">
       <string>General</string>
      </property>
-     <layout class="QGridLayout" name="gridLayout">
+     <layout class="QFormLayout" name="formLayout">
       <item row="0" column="0">
        <widget class="QLabel" name="label_3">
         <property name="text">
@@ -71,7 +71,14 @@
      <property name="title">
       <string>Plain</string>
      </property>
-     <layout class="QGridLayout" name="gridLayout_2">
+     <layout class="QFormLayout" name="formLayout_2">
+      <item row="0" column="0">
+       <widget class="QCheckBox" name="opt_inline_toc">
+        <property name="text">
+         <string>&amp;Inline TOC</string>
+        </property>
+       </widget>
+      </item>
       <item row="1" column="0">
        <widget class="QLabel" name="label_2">
         <property name="text">
@@ -85,20 +92,13 @@
       <item row="1" column="1">
        <widget class="QSpinBox" name="opt_max_line_length"/>
       </item>
-      <item row="2" column="0" colspan="2">
+      <item row="2" column="0">
        <widget class="QCheckBox" name="opt_force_max_line_length">
         <property name="text">
          <string>Force maximum line &amp;length</string>
         </property>
        </widget>
       </item>
-      <item row="0" column="0">
-       <widget class="QCheckBox" name="opt_inline_toc">
-        <property name="text">
-         <string>&amp;Inline TOC</string>
-        </property>
-       </widget>
-      </item>
      </layout>
     </widget>
    </item>