diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -2847,6 +2847,7 @@
     'PhabricatorEventListener' => 'infrastructure/events/PhabricatorEventListener.php',
     'PhabricatorEventType' => 'infrastructure/events/constant/PhabricatorEventType.php',
     'PhabricatorExampleEventListener' => 'infrastructure/events/PhabricatorExampleEventListener.php',
+    'PhabricatorExcelExportFormat' => 'infrastructure/export/PhabricatorExcelExportFormat.php',
     'PhabricatorExecFutureFileUploadSource' => 'applications/files/uploadsource/PhabricatorExecFutureFileUploadSource.php',
     'PhabricatorExportEngineExtension' => 'infrastructure/export/PhabricatorExportEngineExtension.php',
     'PhabricatorExportField' => 'infrastructure/export/PhabricatorExportField.php',
@@ -8282,6 +8283,7 @@
     'PhabricatorEventListener' => 'PhutilEventListener',
     'PhabricatorEventType' => 'PhutilEventType',
     'PhabricatorExampleEventListener' => 'PhabricatorEventListener',
+    'PhabricatorExcelExportFormat' => 'PhabricatorExportFormat',
     'PhabricatorExecFutureFileUploadSource' => 'PhabricatorFileUploadSource',
     'PhabricatorExportEngineExtension' => 'Phobject',
     'PhabricatorExportField' => 'Phobject',
diff --git a/src/applications/search/controller/PhabricatorApplicationSearchController.php b/src/applications/search/controller/PhabricatorApplicationSearchController.php
--- a/src/applications/search/controller/PhabricatorApplicationSearchController.php
+++ b/src/applications/search/controller/PhabricatorApplicationSearchController.php
@@ -410,8 +410,10 @@
 
     if ($named_query) {
       $filename = $named_query->getQueryName();
+      $sheet_title = $named_query->getQueryName();
     } else {
       $filename = $engine->getResultTypeDescription();
+      $sheet_title = $engine->getResultTypeDescription();
     }
     $filename = phutil_utf8_strtolower($filename);
     $filename = PhabricatorFile::normalizeFileName($filename);
@@ -445,8 +447,9 @@
         $mime_type = $format->getMIMEContentType();
         $filename = $filename.'.'.$extension;
 
-        $format = clone $format;
-        $format->setViewer($viewer);
+        $format = id(clone $format)
+          ->setViewer($viewer)
+          ->setTitle($sheet_title);
 
         $export_data = $engine->newExport($objects);
         $objects = array_values($objects);
diff --git a/src/infrastructure/export/PhabricatorEpochExportField.php b/src/infrastructure/export/PhabricatorEpochExportField.php
--- a/src/infrastructure/export/PhabricatorEpochExportField.php
+++ b/src/infrastructure/export/PhabricatorEpochExportField.php
@@ -24,4 +24,24 @@
     return (int)$value;
   }
 
+  public function getPHPExcelValue($value) {
+    $epoch = $this->getNaturalValue($value);
+
+    $seconds_per_day = phutil_units('1 day in seconds');
+    $offset = ($seconds_per_day * 25569);
+
+    return ($epoch + $offset) / $seconds_per_day;
+  }
+
+  /**
+   * @phutil-external-symbol class PHPExcel_Style_NumberFormat
+   */
+  public function formatPHPExcelCell($cell, $style) {
+    $code = PHPExcel_Style_NumberFormat::FORMAT_DATE_YYYYMMDD2;
+
+    $style
+      ->getNumberFormat()
+      ->setFormatCode($code);
+  }
+
 }
diff --git a/src/infrastructure/export/PhabricatorExcelExportFormat.php b/src/infrastructure/export/PhabricatorExcelExportFormat.php
new file mode 100644
--- /dev/null
+++ b/src/infrastructure/export/PhabricatorExcelExportFormat.php
@@ -0,0 +1,145 @@
+<?php
+
+final class PhabricatorExcelExportFormat
+  extends PhabricatorExportFormat {
+
+  const EXPORTKEY = 'excel';
+
+  private $workbook;
+  private $sheet;
+  private $rowCursor;
+
+  public function getExportFormatName() {
+    return pht('Excel (.xlsx)');
+  }
+
+  public function isExportFormatEnabled() {
+    return true;
+  }
+
+  public function getFileExtension() {
+    return 'xlsx';
+  }
+
+  public function getMIMEContentType() {
+    return 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
+  }
+
+  /**
+   * @phutil-external-symbol class PHPExcel_Cell_DataType
+   */
+  public function addHeaders(array $fields) {
+    $sheet = $this->getSheet();
+
+    $header_format = array(
+      'font'  => array(
+        'bold' => true,
+      ),
+    );
+
+    $row = 1;
+    $col = 0;
+    foreach ($fields as $field) {
+      $cell_value = $field->getLabel();
+
+      $cell_name = $this->getCellName($col, $row);
+
+      $cell = $sheet->setCellValue(
+        $cell_name,
+        $cell_value,
+        $return_cell = true);
+
+      $sheet->getStyle($cell_name)->applyFromArray($header_format);
+      $cell->setDataType(PHPExcel_Cell_DataType::TYPE_STRING);
+
+      $width = $field->getCharacterWidth();
+      if ($width !== null) {
+        $col_name = $this->getCellName($col);
+        $sheet->getColumnDimension($col_name)
+          ->setWidth($width);
+      }
+
+      $col++;
+    }
+  }
+
+  public function addObject($object, array $fields, array $map) {
+    $sheet = $this->getSheet();
+
+    $col = 0;
+    foreach ($fields as $key => $field) {
+      $cell_value = $map[$key];
+      $cell_value = $field->getPHPExcelValue($cell_value);
+
+      $cell_name = $this->getCellName($col, $this->rowCursor);
+
+      $cell = $sheet->setCellValue(
+        $cell_name,
+        $cell_value,
+        $return_cell = true);
+
+      $style = $sheet->getStyle($cell_name);
+      $field->formatPHPExcelCell($cell, $style);
+
+      $col++;
+    }
+
+    $this->rowCursor++;
+  }
+
+  /**
+   * @phutil-external-symbol class PHPExcel_IOFactory
+   */
+  public function newFileData() {
+    $workbook = $this->getWorkbook();
+    $writer = PHPExcel_IOFactory::createWriter($workbook, 'Excel2007');
+
+    ob_start();
+    $writer->save('php://output');
+    $data = ob_get_clean();
+
+    return $data;
+  }
+
+  private function getWorkbook() {
+    if (!$this->workbook) {
+      $this->workbook = $this->newWorkbook();
+    }
+    return $this->workbook;
+  }
+
+  /**
+   * @phutil-external-symbol class PHPExcel
+   */
+  private function newWorkbook() {
+    include_once 'PHPExcel.php';
+    return new PHPExcel();
+  }
+
+  private function getSheet() {
+    if (!$this->sheet) {
+      $workbook = $this->getWorkbook();
+
+      $sheet = $workbook->setActiveSheetIndex(0);
+      $sheet->setTitle($this->getTitle());
+
+      $this->sheet = $sheet;
+
+      // The row cursor starts on the second row, after the header row.
+      $this->rowCursor = 2;
+    }
+
+    return $this->sheet;
+  }
+
+  private function getCellName($col, $row = null) {
+    $col_name = chr(ord('A') + $col);
+
+    if ($row === null) {
+      return $col_name;
+    }
+
+    return $col_name.$row;
+  }
+
+}
diff --git a/src/infrastructure/export/PhabricatorExportField.php b/src/infrastructure/export/PhabricatorExportField.php
--- a/src/infrastructure/export/PhabricatorExportField.php
+++ b/src/infrastructure/export/PhabricatorExportField.php
@@ -32,4 +32,19 @@
     return $value;
   }
 
+  public function getPHPExcelValue($value) {
+    return $this->getTextValue($value);
+  }
+
+  /**
+   * @phutil-external-symbol class PHPExcel_Cell_DataType
+   */
+  public function formatPHPExcelCell($cell, $style) {
+    $cell->setDataType(PHPExcel_Cell_DataType::TYPE_STRING);
+  }
+
+  public function getCharacterWidth() {
+    return 24;
+  }
+
 }
diff --git a/src/infrastructure/export/PhabricatorExportFormat.php b/src/infrastructure/export/PhabricatorExportFormat.php
--- a/src/infrastructure/export/PhabricatorExportFormat.php
+++ b/src/infrastructure/export/PhabricatorExportFormat.php
@@ -4,6 +4,7 @@
   extends Phobject {
 
   private $viewer;
+  private $title;
 
   final public function getExportFormatKey() {
     return $this->getPhobjectClassConstant('EXPORTKEY');
@@ -18,6 +19,15 @@
     return $this->viewer;
   }
 
+  final public function setTitle($title) {
+    $this->title = $title;
+    return $this;
+  }
+
+  final public function getTitle() {
+    return $this->title;
+  }
+
   abstract public function getExportFormatName();
   abstract public function getMIMEContentType();
   abstract public function getFileExtension();
diff --git a/src/infrastructure/export/PhabricatorIDExportField.php b/src/infrastructure/export/PhabricatorIDExportField.php
--- a/src/infrastructure/export/PhabricatorIDExportField.php
+++ b/src/infrastructure/export/PhabricatorIDExportField.php
@@ -7,4 +7,8 @@
     return (int)$value;
   }
 
+  public function getCharacterWidth() {
+    return 12;
+  }
+
 }
diff --git a/src/infrastructure/export/PhabricatorIntExportField.php b/src/infrastructure/export/PhabricatorIntExportField.php
--- a/src/infrastructure/export/PhabricatorIntExportField.php
+++ b/src/infrastructure/export/PhabricatorIntExportField.php
@@ -4,7 +4,22 @@
   extends PhabricatorExportField {
 
   public function getNaturalValue($value) {
+    if ($value === null) {
+      return $value;
+    }
+
     return (int)$value;
   }
 
+  /**
+   * @phutil-external-symbol class PHPExcel_Cell_DataType
+   */
+  public function formatPHPExcelCell($cell, $style) {
+    $cell->setDataType(PHPExcel_Cell_DataType::TYPE_NUMERIC);
+  }
+
+  public function getCharacterWidth() {
+    return 8;
+  }
+
 }
diff --git a/src/infrastructure/export/PhabricatorPHIDExportField.php b/src/infrastructure/export/PhabricatorPHIDExportField.php
--- a/src/infrastructure/export/PhabricatorPHIDExportField.php
+++ b/src/infrastructure/export/PhabricatorPHIDExportField.php
@@ -1,4 +1,10 @@
 <?php
 
 final class PhabricatorPHIDExportField
-  extends PhabricatorExportField {}
+  extends PhabricatorExportField {
+
+  public function getCharacterWidth() {
+    return 32;
+  }
+
+}