diff --git a/libs/os/filesize.h b/libs/os/filesize.h
new file mode 100644
index 0000000000..44174b50d9
--- /dev/null
+++ b/libs/os/filesize.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <fmt/format.h>
+
+namespace os
+{
+
+// Formats the given number in bytes/kB/MB/GB
+inline std::string getFormattedFileSize(std::size_t size)
+{
+    if (size > 1024 * 1024 * 1024)
+    {
+        return fmt::format("{0:0.2f} GB", (static_cast<double>(size) / (1024 * 1024 * 1024)));
+    }
+    else if (size > 1024 * 1024)
+    {
+        return fmt::format("{0:0.1f} MB", (static_cast<double>(size) / (1024 * 1024)));
+    }
+    else if (size > 1024)
+    {
+        return fmt::format("{0:0.0f} kB", (static_cast<double>(size) / 1024));
+    }
+    else
+    {
+        return fmt::format("{0:d} bytes", size);
+    }
+}
+
+}
diff --git a/libs/wxutil/fsview/FileSystemView.cpp b/libs/wxutil/fsview/FileSystemView.cpp
index 956f82e6c0..28d92a7d20 100644
--- a/libs/wxutil/fsview/FileSystemView.cpp
+++ b/libs/wxutil/fsview/FileSystemView.cpp
@@ -50,6 +50,9 @@ FileSystemView::FileSystemView(wxWindow* parent, const TreeModel::Ptr& model, lo
     AppendIconTextColumn(_("File"), Columns().filename.getColumnIndex(),
         wxDATAVIEW_CELL_INERT, wxCOL_WIDTH_AUTOSIZE, wxALIGN_NOT, wxDATAVIEW_COL_SORTABLE);
 
+    AppendTextColumn(_("Size"), Columns().size.getColumnIndex(),
+        wxDATAVIEW_CELL_INERT, wxCOL_WIDTH_AUTOSIZE, wxALIGN_RIGHT, wxDATAVIEW_COL_SORTABLE);
+
     // Get selection and connect the changed callback
     Bind(wxEVT_DATAVIEW_SELECTION_CHANGED, &FileSystemView::OnSelectionChanged, this);
     Bind(EV_TREEMODEL_POPULATION_FINISHED, &FileSystemView::OnTreeStorePopulationFinished, this);
diff --git a/libs/wxutil/fsview/Populator.cpp b/libs/wxutil/fsview/Populator.cpp
index 526d9b19e7..3c9edc2477 100644
--- a/libs/wxutil/fsview/Populator.cpp
+++ b/libs/wxutil/fsview/Populator.cpp
@@ -1,7 +1,9 @@
 #include "Populator.h"
 
 #include "iuimanager.h"
+#include "iarchive.h"
 #include "os/path.h"
+#include "os/filesize.h"
 
 #include <wx/artprov.h>
 
@@ -123,6 +125,10 @@ void Populator::visit(wxutil::TreeModel& /* store */, wxutil::TreeModel::Row& ro
         isExplicit ? _fileIcon : _folderIcon));
     row[_columns.vfspath] = _basePath + path;
     row[_columns.isFolder] = !isExplicit;
+
+    // Get the file size if possible
+    auto file = GlobalFileSystem().openFile(_basePath + path);
+    row[_columns.size] =  os::getFormattedFileSize(file ? file->size() : -1);
 }
 
 }
diff --git a/libs/wxutil/fsview/Populator.h b/libs/wxutil/fsview/Populator.h
index 72e4009c05..355ced2875 100644
--- a/libs/wxutil/fsview/Populator.h
+++ b/libs/wxutil/fsview/Populator.h
@@ -15,14 +15,16 @@ struct TreeColumns :
     public TreeModel::ColumnRecord
 {
     TreeColumns() :
-        filename(add(wxutil::TreeModel::Column::IconText)),
-        vfspath(add(wxutil::TreeModel::Column::String)),
-        isFolder(add(wxutil::TreeModel::Column::Boolean))
+        filename(add(TreeModel::Column::IconText)),
+        vfspath(add(TreeModel::Column::String)),
+        isFolder(add(TreeModel::Column::Boolean)),
+        size(add(TreeModel::Column::String))
     {}
 
-    wxutil::TreeModel::Column filename;	// e.g. "chair1.pfb"
-    wxutil::TreeModel::Column vfspath;	// e.g. "prefabs/chair1.pfb"
-    wxutil::TreeModel::Column isFolder;	// whether this is a folder
+    TreeModel::Column filename; // e.g. "chair1.pfb"
+    TreeModel::Column vfspath;  // e.g. "prefabs/chair1.pfb"
+    TreeModel::Column isFolder; // whether this is a folder
+    TreeModel::Column size;     // file size string
 };
 
 class Populator :
diff --git a/tools/msvc/libs.vcxproj b/tools/msvc/libs.vcxproj
index cf03ca6fe2..e6240ee6cc 100644
--- a/tools/msvc/libs.vcxproj
+++ b/tools/msvc/libs.vcxproj
@@ -174,6 +174,7 @@
     <ClInclude Include="..\..\libs\ObservedUndoable.h" />
     <ClInclude Include="..\..\libs\os\dir.h" />
     <ClInclude Include="..\..\libs\os\file.h" />
+    <ClInclude Include="..\..\libs\os\filesize.h" />
     <ClInclude Include="..\..\libs\os\fs.h" />
     <ClInclude Include="..\..\libs\os\path.h" />
     <ClInclude Include="..\..\libs\parser\CodeTokeniser.h" />
diff --git a/tools/msvc/libs.vcxproj.filters b/tools/msvc/libs.vcxproj.filters
index 02f16eebd2..ab1086396f 100644
--- a/tools/msvc/libs.vcxproj.filters
+++ b/tools/msvc/libs.vcxproj.filters
@@ -265,6 +265,9 @@
     <ClInclude Include="..\..\libs\stream\ExportStream.h">
       <Filter>stream</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\libs\os\filesize.h">
+      <Filter>os</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="util">