diff --git a/include/mainwindow.h b/include/mainwindow.h
index 2d4622d5..8a2579fe 100644
--- a/include/mainwindow.h
+++ b/include/mainwindow.h
@@ -102,7 +102,9 @@ public:
     Q_INVOKABLE QJSValue getSecondaryTilesetPalettePreview(int paletteIndex);
     Q_INVOKABLE QJSValue getSecondaryTilesetPalettesPreview();
     Q_INVOKABLE int getNumPrimaryTilesetMetatiles();
+    Q_INVOKABLE int getMaxPrimaryTilesetMetatiles();
     Q_INVOKABLE int getNumSecondaryTilesetMetatiles();
+    Q_INVOKABLE int getMaxSecondaryTilesetMetatiles();
     Q_INVOKABLE bool isPrimaryTileset(QString tilesetName);
     Q_INVOKABLE bool isSecondaryTileset(QString tilesetName);
     Q_INVOKABLE QString getPrimaryTileset();
diff --git a/src/mainwindow_scriptapi.cpp b/src/mainwindow_scriptapi.cpp
index 933991d7..3144794a 100644
--- a/src/mainwindow_scriptapi.cpp
+++ b/src/mainwindow_scriptapi.cpp
@@ -538,12 +538,24 @@ int MainWindow::getNumPrimaryTilesetMetatiles() {
     return this->editor->map->layout->tileset_primary->metatiles.length();
 }
 
+int MainWindow::getMaxPrimaryTilesetMetatiles() {
+    if (!this->editor || !this->editor->project)
+        return 0;
+    return this->editor->project->getNumMetatilesPrimary();
+}
+
 int MainWindow::getNumSecondaryTilesetMetatiles() {
     if (!this->editor || !this->editor->map || !this->editor->map->layout || !this->editor->map->layout->tileset_secondary)
         return 0;
     return this->editor->map->layout->tileset_secondary->metatiles.length();
 }
 
+int MainWindow::getMaxSecondaryTilesetMetatiles() {
+    if (!this->editor || !this->editor->project)
+        return 0;
+    return this->editor->project->getNumMetatilesTotal() - this->editor->project->getNumMetatilesPrimary();
+}
+
 bool MainWindow::isPrimaryTileset(QString tilesetName) {
     if (!this->editor || !this->editor->project)
         return false;