diff --git a/src/PhpSpreadsheet/Shared/Font.php b/src/PhpSpreadsheet/Shared/Font.php
index 3ee3d5a6..1adf213e 100644
--- a/src/PhpSpreadsheet/Shared/Font.php
+++ b/src/PhpSpreadsheet/Shared/Font.php
@@ -229,7 +229,8 @@ class Font
         $cellText = '',
         $rotation = 0,
         ?FontStyle $defaultFont = null,
-        bool $filterAdjustment = false
+        bool $filterAdjustment = false,
+        int $indentAdjustment = 0
     ): int {
         // If it is rich text, use plain text
         if ($cellText instanceof RichText) {
@@ -248,12 +249,12 @@ class Font
         }
 
         // Try to get the exact text width in pixels
-        $approximate = self::$autoSizeMethod == self::AUTOSIZE_METHOD_APPROX;
+        $approximate = self::$autoSizeMethod === self::AUTOSIZE_METHOD_APPROX;
         $columnWidth = 0;
         if (!$approximate) {
             $columnWidthAdjust = ceil(
                 self::getTextWidthPixelsExact(
-                    str_repeat('n', 1 * ($filterAdjustment ? 3 : 1)),
+                    str_repeat('n', 1 * (($filterAdjustment ? 3 : 1) + ($indentAdjustment * 2))),
                     $font,
                     0
                 ) * 1.07
@@ -270,7 +271,7 @@ class Font
 
         if ($approximate) {
             $columnWidthAdjust = self::getTextWidthPixelsApprox(
-                str_repeat('n', 1 * ($filterAdjustment ? 3 : 1)),
+                str_repeat('n', 1 * (($filterAdjustment ? 3 : 1) + ($indentAdjustment * 2))),
                 $font,
                 0
             );
diff --git a/src/PhpSpreadsheet/Worksheet/Worksheet.php b/src/PhpSpreadsheet/Worksheet/Worksheet.php
index dd2770d4..4a441a93 100644
--- a/src/PhpSpreadsheet/Worksheet/Worksheet.php
+++ b/src/PhpSpreadsheet/Worksheet/Worksheet.php
@@ -756,11 +756,11 @@ class Worksheet implements IComparable
                     //By default merged cells should be ignored
                     $isMergedButProceed = false;
 
-                    //The only exception is if it's a merge range value cell of a 'vertical' randge (1 column wide)
+                    //The only exception is if it's a merge range value cell of a 'vertical' range (1 column wide)
                     if ($isMerged && $cell->isMergeRangeValueCell()) {
                         $range = $cell->getMergeRange();
                         $rangeBoundaries = Coordinate::rangeDimension($range);
-                        if ($rangeBoundaries[0] == 1) {
+                        if ($rangeBoundaries[0] === 1) {
                             $isMergedButProceed = true;
                         }
                     }
@@ -774,6 +774,8 @@ class Worksheet implements IComparable
                             $filterAdjustment = true;
                         }
 
+                        $indentAdjustment = $cell->getStyle()->getAlignment()->getIndent();
+
                         // Calculated value
                         // To formatted string
                         $cellValue = NumberFormat::toFormattedString(
@@ -791,7 +793,8 @@ class Worksheet implements IComparable
                                     $this->getParent()->getCellXfByIndex($cell->getXfIndex())
                                         ->getAlignment()->getTextRotation(),
                                     $this->getParent()->getDefaultStyle()->getFont(),
-                                    $filterAdjustment
+                                    $filterAdjustment,
+                                    $indentAdjustment
                                 )
                             );
                         }
diff --git a/tests/PhpSpreadsheetTests/Shared/FontTest.php b/tests/PhpSpreadsheetTests/Shared/FontTest.php
index 9bc1d18a..c733f8ee 100644
--- a/tests/PhpSpreadsheetTests/Shared/FontTest.php
+++ b/tests/PhpSpreadsheetTests/Shared/FontTest.php
@@ -99,4 +99,35 @@ class FontTest extends TestCase
         $width = Font::getTextWidthPixelsApprox('n', $font, -165);
         self::assertEquals(4, $width);
     }
+
+    /**
+     * @dataProvider providerCalculateApproximateColumnWidth
+     */
+    public function testCalculateApproximateColumnWidth(
+        int $expectedWidth,
+        StyleFont $font,
+        string $text,
+        int $rotation,
+        StyleFont $defaultFont,
+        bool $filter,
+        int $indent
+    ): void {
+        $columnWidth = Font::calculateColumnWidth($font, $text, $rotation, $defaultFont, $filter, $indent);
+        self::assertEquals($expectedWidth, $columnWidth);
+    }
+
+    public function providerCalculateApproximateColumnWidth(): array
+    {
+        return [
+            [13, new StyleFont(), 'Hello World', 0, new StyleFont(), false, 0],
+            [16, new StyleFont(), 'Hello World', 0, new StyleFont(), true, 0],
+            [16, new StyleFont(), 'Hello World', 0, new StyleFont(), false, 1],
+            [18, new StyleFont(), 'Hello World', 0, new StyleFont(), false, 2],
+            [20, new StyleFont(), 'Hello World', 0, new StyleFont(), false, 3],
+            [6, new StyleFont(), "Hello\nWorld", 0, new StyleFont(), false, 0],
+            [9, new StyleFont(), "Hello\nWorld", 0, new StyleFont(), true, 0],
+            [17, new StyleFont(), 'PhpSpreadsheet', 0, new StyleFont(), false, 0],
+            [19, new StyleFont(), 'PhpSpreadsheet', 0, new StyleFont(), false, 1],
+        ];
+    }
 }