diff --git a/src/Spout/Writer/Common/Entity/Options.php b/src/Spout/Writer/Common/Entity/Options.php
index d7152bb..3918333 100644
--- a/src/Spout/Writer/Common/Entity/Options.php
+++ b/src/Spout/Writer/Common/Entity/Options.php
@@ -20,4 +20,9 @@ abstract class Options
 
     // XLSX specific options
     const SHOULD_USE_INLINE_STRINGS = 'shouldUseInlineStrings';
+
+    // Cell size options
+    const DEFAULT_COLUMN_WIDTH = 'defaultColumnWidth';
+    const DEFAULT_ROW_HEIGHT = 'defaultRowHeight';
+    const COLUMN_WIDTHS = 'columnWidthDefinition';
 }
diff --git a/src/Spout/Writer/Common/Manager/WorkbookManagerAbstract.php b/src/Spout/Writer/Common/Manager/WorkbookManagerAbstract.php
index 7be5c6e..12c6523 100644
--- a/src/Spout/Writer/Common/Manager/WorkbookManagerAbstract.php
+++ b/src/Spout/Writer/Common/Manager/WorkbookManagerAbstract.php
@@ -103,7 +103,6 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
      * Creates a new sheet in the workbook and make it the current sheet.
      * The writing will resume where it stopped (i.e. data won't be truncated).
      *
-     * @throws IOException If unable to open the sheet for writing
      * @return Worksheet The created sheet
      */
     public function addNewSheetAndMakeItCurrent()
@@ -117,8 +116,8 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
     /**
      * Creates a new sheet in the workbook. The current sheet remains unchanged.
      *
-     * @throws \Box\Spout\Common\Exception\IOException If unable to open the sheet for writing
      * @return Worksheet The created sheet
+     * @throws IOException
      */
     private function addNewSheet()
     {
@@ -157,6 +156,16 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
         return $this->currentWorksheet;
     }
 
+    /**
+     * Starts the current sheet and opens the file pointer
+     *
+     * @throws IOException
+     */
+    public function startCurrentSheet()
+    {
+        $this->worksheetManager->startSheet($this->getCurrentWorksheet());
+    }
+
     /**
      * Sets the given sheet as the current one. New data will be written to this sheet.
      * The writing will resume where it stopped (i.e. data won't be truncated).
@@ -210,9 +219,10 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
      * with the creation of new worksheets if one worksheet has reached its maximum capicity.
      *
      * @param Row $row The row to be added
-     * @throws IOException If trying to create a new sheet and unable to open the sheet for writing
-     * @throws WriterException If unable to write data
+     *
      * @return void
+     * @throws IOException If trying to create a new sheet and unable to open the sheet for writing
+     * @throws \Box\Spout\Common\Exception\InvalidArgumentException
      */
     public function addRowToCurrentWorksheet(Row $row)
     {
@@ -249,8 +259,10 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
      *
      * @param Worksheet $worksheet Worksheet to write the row to
      * @param Row $row The row to be added
-     * @throws WriterException If unable to write data
+     *
      * @return void
+     * @throws IOException
+     * @throws \Box\Spout\Common\Exception\InvalidArgumentException
      */
     private function addRowToWorksheet(Worksheet $worksheet, Row $row)
     {
@@ -276,6 +288,28 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
         }
     }
 
+    /**
+     * @param float|null $width
+     */
+    public function setDefaultColumnWidth(float $width) {
+        $this->worksheetManager->setDefaultColumnWidth($width);
+    }
+
+    /**
+     * @param float|null $height
+     */
+    public function setDefaultRowHeight(float $height) {
+        $this->worksheetManager->setDefaultRowHeight($height);
+    }
+
+    /**
+     * @param float|null $width
+     * @param array $columns One or more columns with this width
+     */
+    public function setColumnWidth($width, ...$columns) {
+        $this->worksheetManager->setColumnWidth($width, ...$columns);
+    }
+
     /**
      * Closes the workbook and all its associated sheets.
      * All the necessary files are written to disk and zipped together to create the final file.
diff --git a/src/Spout/Writer/Common/Manager/WorkbookManagerInterface.php b/src/Spout/Writer/Common/Manager/WorkbookManagerInterface.php
index aed304a..7bb469e 100644
--- a/src/Spout/Writer/Common/Manager/WorkbookManagerInterface.php
+++ b/src/Spout/Writer/Common/Manager/WorkbookManagerInterface.php
@@ -42,6 +42,21 @@ interface WorkbookManagerInterface
      */
     public function getCurrentWorksheet();
 
+    /**
+     * Starts the current sheet and opens its file pointer
+     */
+    public function startCurrentSheet();
+
+    /**
+     * @param float $width
+     */
+    public function setDefaultColumnWidth(float $width);
+
+    /**
+     * @param float $height
+     */
+    public function setDefaultRowHeight(float $height);
+
     /**
      * Sets the given sheet as the current one. New data will be written to this sheet.
      * The writing will resume where it stopped (i.e. data won't be truncated).
diff --git a/src/Spout/Writer/WriterMultiSheetsAbstract.php b/src/Spout/Writer/WriterMultiSheetsAbstract.php
index 8170b67..6148738 100644
--- a/src/Spout/Writer/WriterMultiSheetsAbstract.php
+++ b/src/Spout/Writer/WriterMultiSheetsAbstract.php
@@ -4,6 +4,7 @@ namespace Box\Spout\Writer;
 
 use Box\Spout\Common\Creator\HelperFactory;
 use Box\Spout\Common\Entity\Row;
+use Box\Spout\Common\Exception\IOException;
 use Box\Spout\Common\Helper\GlobalFunctionsHelper;
 use Box\Spout\Common\Manager\OptionsManagerInterface;
 use Box\Spout\Writer\Common\Creator\ManagerFactoryInterface;
@@ -96,8 +97,9 @@ abstract class WriterMultiSheetsAbstract extends WriterAbstract
     /**
      * Creates a new sheet and make it the current sheet. The data will now be written to this sheet.
      *
-     * @throws WriterNotOpenedException If the writer has not been opened yet
      * @return Sheet The created sheet
+     * @throws IOException
+     * @throws WriterNotOpenedException If the writer has not been opened yet
      */
     public function addNewSheetAndMakeItCurrent()
     {
@@ -135,6 +137,36 @@ abstract class WriterMultiSheetsAbstract extends WriterAbstract
         $this->workbookManager->setCurrentSheet($sheet);
     }
 
+    /**
+     * @param float $width
+     * @throws WriterNotOpenedException
+     */
+    public function setDefaultColumnWidth(float $width)
+    {
+        $this->throwIfWorkbookIsNotAvailable();
+        $this->workbookManager->setDefaultColumnWidth($width);
+    }
+
+    /**
+     * @param float $height
+     * @throws WriterNotOpenedException
+     */
+    public function setDefaultRowHeight(float $height)
+    {
+        $this->throwIfWorkbookIsNotAvailable();
+        $this->workbookManager->setDefaultRowHeight($height);
+    }
+
+    /**
+     * @param float|null $width
+     * @param array $columns One or more columns with this width
+     * @throws WriterNotOpenedException
+     */
+    public function setColumnWidth($width, ...$columns) {
+        $this->throwIfWorkbookIsNotAvailable();
+        $this->workbookManager->setColumnWidth($width, ...$columns);
+    }
+
     /**
      * Checks if the workbook has been created. Throws an exception if not created yet.
      *
@@ -143,13 +175,15 @@ abstract class WriterMultiSheetsAbstract extends WriterAbstract
      */
     protected function throwIfWorkbookIsNotAvailable()
     {
-        if (!$this->workbookManager->getWorkbook()) {
+        if (empty($this->workbookManager) || !$this->workbookManager->getWorkbook()) {
             throw new WriterNotOpenedException('The writer must be opened before performing this action.');
         }
     }
 
     /**
      * {@inheritdoc}
+     *
+     * @throws Exception\WriterException
      */
     protected function addRowToWriter(Row $row)
     {
diff --git a/src/Spout/Writer/XLSX/Manager/OptionsManager.php b/src/Spout/Writer/XLSX/Manager/OptionsManager.php
index 53718bc..d83b8ae 100644
--- a/src/Spout/Writer/XLSX/Manager/OptionsManager.php
+++ b/src/Spout/Writer/XLSX/Manager/OptionsManager.php
@@ -39,6 +39,9 @@ class OptionsManager extends OptionsManagerAbstract
             Options::DEFAULT_ROW_STYLE,
             Options::SHOULD_CREATE_NEW_SHEETS_AUTOMATICALLY,
             Options::SHOULD_USE_INLINE_STRINGS,
+            Options::DEFAULT_COLUMN_WIDTH,
+            Options::DEFAULT_ROW_HEIGHT,
+            Options::COLUMN_WIDTHS,
         ];
     }
 
diff --git a/src/Spout/Writer/XLSX/Manager/WorksheetManager.php b/src/Spout/Writer/XLSX/Manager/WorksheetManager.php
index b0e458f..f6ee831 100644
--- a/src/Spout/Writer/XLSX/Manager/WorksheetManager.php
+++ b/src/Spout/Writer/XLSX/Manager/WorksheetManager.php
@@ -62,6 +62,18 @@ EOD;
     /** @var InternalEntityFactory Factory to create entities */
     private $entityFactory;
 
+    /** @var float|null The default column width to use */
+    private $defaultColumnWidth;
+
+    /** @var float|null The default row height to use */
+    private $defaultRowHeight;
+
+    /** @var bool Whether rows have been written */
+    private $hasWrittenRows = false;
+
+    /** @var array Array of min-max-width arrays */
+    private $columnWidths;
+
     /**
      * WorksheetManager constructor.
      *
@@ -85,6 +97,9 @@ EOD;
         InternalEntityFactory $entityFactory
     ) {
         $this->shouldUseInlineStrings = $optionsManager->getOption(Options::SHOULD_USE_INLINE_STRINGS);
+        $this->setDefaultColumnWidth($optionsManager->getOption(Options::DEFAULT_COLUMN_WIDTH));
+        $this->setDefaultRowHeight($optionsManager->getOption(Options::DEFAULT_ROW_HEIGHT));
+        $this->columnWidths = $optionsManager->getOption(Options::COLUMN_WIDTHS) ?? [];
         $this->rowManager = $rowManager;
         $this->styleManager = $styleManager;
         $this->styleMerger = $styleMerger;
@@ -102,6 +117,39 @@ EOD;
         return $this->sharedStringsManager;
     }
 
+    /**
+     * @param float|null $width
+     */
+    public function setDefaultColumnWidth($width) {
+        $this->defaultColumnWidth = $width;
+    }
+
+    /**
+     * @param float|null $height
+     */
+    public function setDefaultRowHeight($height) {
+        $this->defaultRowHeight = $height;
+    }
+
+    /**
+     * @param float|null $width
+     * @param array $columns One or more columns with this width
+     */
+    public function setColumnWidth($width, ...$columns) {
+        // Gather sequences
+        $sequence = [];
+        foreach ($columns as $i) {
+            $sequenceLength = count($sequence);
+            $previousValue = $sequence[$sequenceLength - 1];
+            if ($sequenceLength > 0 && $i !== $previousValue + 1) {
+                $this->columnWidths[] = [$sequence[0], $previousValue, $width];
+                $sequence = [];
+            }
+            $sequence[] = $i;
+        }
+        $this->columnWidths[] = [$sequence[0], $sequence[count($sequence) - 1], $width];
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -113,7 +161,6 @@ EOD;
         $worksheet->setFilePointer($sheetFilePointer);
 
         fwrite($sheetFilePointer, self::SHEET_XML_FILE_HEADER);
-        fwrite($sheetFilePointer, '<sheetData>');
     }
 
     /**
@@ -153,6 +200,12 @@ EOD;
      */
     private function addNonEmptyRow(Worksheet $worksheet, Row $row)
     {
+        $sheetFilePointer = $worksheet->getFilePointer();
+        if (!$this->hasWrittenRows) {
+            fwrite($sheetFilePointer, $this->getXMLFragmentForDefaultCellSizing());
+            fwrite($sheetFilePointer, $this->getXMLFragmentForColumnWidths());
+            fwrite($sheetFilePointer, '<sheetData>');
+        }
         $cellIndex = 0;
         $rowStyle = $row->getStyle();
         $rowIndex = $worksheet->getLastWrittenRowIndex() + 1;
@@ -167,10 +220,11 @@ EOD;
 
         $rowXML .= '</row>';
 
-        $wasWriteSuccessful = fwrite($worksheet->getFilePointer(), $rowXML);
+        $wasWriteSuccessful = fwrite($sheetFilePointer, $rowXML);
         if ($wasWriteSuccessful === false) {
             throw new IOException("Unable to write data in {$worksheet->getFilePath()}");
         }
+        $this->hasWrittenRows = true;
     }
 
     /**
@@ -256,6 +310,41 @@ EOD;
         return $cellXMLFragment;
     }
 
+    /**
+     * Construct column width references xml to inject into worksheet xml file
+     *
+     * @return string
+     */
+    public function getXMLFragmentForColumnWidths()
+    {
+        if (empty($this->columnWidths)) {
+            return '';
+        }
+        $xml = '<cols>';
+        foreach ($this->columnWidths as $entry) {
+            $xml .= '<col min="'.$entry[0].'" max="'.$entry[1].'" width="'.$entry[2].'" customWidth="true"/>';
+        }
+        $xml .= '</cols>';
+        return $xml;
+    }
+
+    /**
+     * Constructs default row height and width xml to inject into worksheet xml file
+     *
+     * @return string
+     */
+    public function getXMLFragmentForDefaultCellSizing()
+    {
+        $rowHeightXml = empty($this->defaultRowHeight) ? '' : " defaultRowHeight=\"{$this->defaultRowHeight}\"";
+        $colWidthXml = empty($this->defaultColumnWidth) ? '' : " defaultColWidth=\"{$this->defaultColumnWidth}\"";
+        if (empty($colWidthXml) && empty($rowHeightXml)) {
+            return '';
+        }
+        // Ensure that the required defaultRowHeight is set
+        $rowHeightXml = empty($rowHeightXml) ? ' defaultRowHeight="0"' : $rowHeightXml;
+        return "<sheetFormatPr{$colWidthXml}{$rowHeightXml}/>";
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -267,7 +356,9 @@ EOD;
             return;
         }
 
-        fwrite($worksheetFilePointer, '</sheetData>');
+        if ($this->hasWrittenRows) {
+            fwrite($worksheetFilePointer, '</sheetData>');
+        }
         fwrite($worksheetFilePointer, '</worksheet>');
         fclose($worksheetFilePointer);
     }
diff --git a/tests/Spout/Writer/XLSX/SheetTest.php b/tests/Spout/Writer/XLSX/SheetTest.php
index cebd72e..bf1bbb8 100644
--- a/tests/Spout/Writer/XLSX/SheetTest.php
+++ b/tests/Spout/Writer/XLSX/SheetTest.php
@@ -6,6 +6,7 @@ use Box\Spout\TestUsingResource;
 use Box\Spout\Writer\Common\Creator\WriterEntityFactory;
 use Box\Spout\Writer\Common\Entity\Sheet;
 use Box\Spout\Writer\Exception\InvalidSheetNameException;
+use Box\Spout\Writer\Exception\WriterNotOpenedException;
 use Box\Spout\Writer\RowCreationHelper;
 use PHPUnit\Framework\TestCase;
 
@@ -92,6 +93,124 @@ class SheetTest extends TestCase
         $this->assertContains(' state="hidden"', $xmlContents, 'The sheet visibility should have been changed to "hidden"');
     }
 
+    public function testThrowsIfWorkbookIsNotInitialized()
+    {
+        $this->expectException(WriterNotOpenedException::class);
+        $writer = WriterEntityFactory::createXLSXWriter();
+
+        $writer->addRow($this->createRowFromValues([]));
+    }
+
+    public function testThrowsWhenTryingToSetDefaultsBeforeWorkbookLoaded()
+    {
+        $this->expectException(WriterNotOpenedException::class);
+        $writer = WriterEntityFactory::createXLSXWriter();
+        $writer->setDefaultColumnWidth(10.0);
+    }
+
+    public function testWritesDefaultCellSizesIfSet()
+    {
+        $fileName = 'test_writes_default_cell_sizes_if_set.xlsx';
+        $this->createGeneratedFolderIfNeeded($fileName);
+        $resourcePath = $this->getGeneratedResourcePath($fileName);
+
+        $writer = WriterEntityFactory::createXLSXWriter();
+        $writer->openToFile($resourcePath);
+        $writer->setDefaultColumnWidth(10.0);
+        $writer->setDefaultRowHeight(10.0);
+        $writer->addRow($this->createRowFromValues(['xlsx--11', 'xlsx--12']));
+        $writer->close();
+
+        $pathToWorkbookFile = $resourcePath . '#xl/worksheets/sheet1.xml';
+        $xmlContents = file_get_contents('zip://' . $pathToWorkbookFile);
+
+        $this->assertContains('<sheetFormatPr', $xmlContents, 'No sheetFormatPr tag found in sheet');
+        $this->assertContains(' defaultColWidth="10', $xmlContents, 'No default column width found in sheet');
+        $this->assertContains(' defaultRowHeight="10', $xmlContents, 'No default row height found in sheet');
+    }
+
+    public function testWritesDefaultRequiredRowHeightIfOmitted()
+    {
+        $fileName = 'test_writes_default_required_row_height_if_omitted.xlsx';
+        $this->createGeneratedFolderIfNeeded($fileName);
+        $resourcePath = $this->getGeneratedResourcePath($fileName);
+
+        $writer = WriterEntityFactory::createXLSXWriter();
+        $writer->openToFile($resourcePath);
+        $writer->setDefaultColumnWidth(10.0);
+        $writer->addRow($this->createRowFromValues(['xlsx--11', 'xlsx--12']));
+        $writer->close();
+
+        $pathToWorkbookFile = $resourcePath . '#xl/worksheets/sheet1.xml';
+        $xmlContents = file_get_contents('zip://' . $pathToWorkbookFile);
+
+        $this->assertContains('<sheetFormatPr', $xmlContents, 'No sheetFormatPr tag found in sheet');
+        $this->assertContains(' defaultColWidth="10', $xmlContents, 'No default column width found in sheet');
+        $this->assertContains(' defaultRowHeight="0', $xmlContents, 'No default row height found in sheet');
+    }
+
+    public function testWritesColumnWidths()
+    {
+        $fileName = 'test_column_widths.xlsx';
+        $this->createGeneratedFolderIfNeeded($fileName);
+        $resourcePath = $this->getGeneratedResourcePath($fileName);
+
+        $writer = WriterEntityFactory::createXLSXWriter();
+        $writer->openToFile($resourcePath);
+        $writer->setColumnWidth(100.0, 1);
+        $writer->addRow($this->createRowFromValues(['xlsx--11', 'xlsx--12']));
+        $writer->close();
+
+        $pathToWorkbookFile = $resourcePath . '#xl/worksheets/sheet1.xml';
+        $xmlContents = file_get_contents('zip://' . $pathToWorkbookFile);
+
+        $this->assertContains('<cols', $xmlContents, 'No cols tag found in sheet');
+        $this->assertContains('<col min="1" max="1" width="100" customWidth="true"', $xmlContents, 'No expected column width definition found in sheet');
+    }
+
+    public function testWritesMultipleColumnWidths()
+    {
+        $fileName = 'test_multiple_column_widths.xlsx';
+        $this->createGeneratedFolderIfNeeded($fileName);
+        $resourcePath = $this->getGeneratedResourcePath($fileName);
+
+        $writer = WriterEntityFactory::createXLSXWriter();
+        $writer->openToFile($resourcePath);
+        $writer->setColumnWidth(100.0, 1, 2, 3);
+        $writer->addRow($this->createRowFromValues(['xlsx--11', 'xlsx--12', 'xlsx--13']));
+        $writer->close();
+
+        $pathToWorkbookFile = $resourcePath . '#xl/worksheets/sheet1.xml';
+        $xmlContents = file_get_contents('zip://' . $pathToWorkbookFile);
+
+        $this->assertContains('<cols', $xmlContents, 'No cols tag found in sheet');
+        $this->assertContains('<col min="1" max="3" width="100" customWidth="true"', $xmlContents, 'No expected column width definition found in sheet');
+    }
+
+    public function testWritesMultipleColumnWidthsInRanges()
+    {
+        $fileName = 'test_multiple_column_widths_in_ranges.xlsx';
+        $this->createGeneratedFolderIfNeeded($fileName);
+        $resourcePath = $this->getGeneratedResourcePath($fileName);
+
+        $writer = WriterEntityFactory::createXLSXWriter();
+        $writer->openToFile($resourcePath);
+        $writer->setColumnWidth(50.0, 1, 3, 4, 6);
+        $writer->setColumnWidth(100.0, 2, 5);
+        $writer->addRow($this->createRowFromValues(['xlsx--11', 'xlsx--12', 'xlsx--13', 'xlsx--14', 'xlsx--15', 'xlsx--16']));
+        $writer->close();
+
+        $pathToWorkbookFile = $resourcePath . '#xl/worksheets/sheet1.xml';
+        $xmlContents = file_get_contents('zip://' . $pathToWorkbookFile);
+
+        $this->assertContains('<cols', $xmlContents, 'No cols tag found in sheet');
+        $this->assertContains('<col min="1" max="1" width="50" customWidth="true"', $xmlContents, 'No expected column width definition found in sheet');
+        $this->assertContains('<col min="3" max="4" width="50" customWidth="true"', $xmlContents, 'No expected column width definition found in sheet');
+        $this->assertContains('<col min="6" max="6" width="50" customWidth="true"', $xmlContents, 'No expected column width definition found in sheet');
+        $this->assertContains('<col min="2" max="2" width="100" customWidth="true"', $xmlContents, 'No expected column width definition found in sheet');
+        $this->assertContains('<col min="5" max="5" width="100" customWidth="true"', $xmlContents, 'No expected column width definition found in sheet');
+    }
+
     /**
      * @param string $fileName
      * @param string $sheetName