diff --git a/src/Autoload/Themes.gd b/src/Autoload/Themes.gd
index 0fa2bd6cf..9128c33a8 100644
--- a/src/Autoload/Themes.gd
+++ b/src/Autoload/Themes.gd
@@ -94,3 +94,9 @@ func get_font() -> Font:
 	if Global.control.theme.has_default_font():
 		return Global.control.theme.default_font
 	return ThemeDB.fallback_font
+
+
+func get_font_size() -> int:
+	if Global.control.theme.has_default_font_size():
+		return Global.control.theme.default_font_size
+	return ThemeDB.fallback_font_size
diff --git a/src/UI/Canvas/Rulers/Guide.gd b/src/UI/Canvas/Rulers/Guide.gd
index b97c50323..2cdeeae55 100644
--- a/src/UI/Canvas/Rulers/Guide.gd
+++ b/src/UI/Canvas/Rulers/Guide.gd
@@ -124,7 +124,7 @@ func _draw() -> void:
 				string,
 				HORIZONTAL_ALIGNMENT_LEFT,
 				-1,
-				16,
+				Themes.get_font_size(),
 				color
 			)
 		else:
@@ -134,7 +134,7 @@ func _draw() -> void:
 				string,
 				HORIZONTAL_ALIGNMENT_LEFT,
 				-1,
-				16,
+				Themes.get_font_size(),
 				color
 			)
 		return
@@ -149,7 +149,13 @@ func _draw() -> void:
 			< intersection.distance_squared_to(viewport_poly[0])
 		):
 			draw_string(
-				font, Vector2(x_offset, y_offset), string, HORIZONTAL_ALIGNMENT_LEFT, -1, 16, color
+				font,
+				Vector2(x_offset, y_offset),
+				string,
+				HORIZONTAL_ALIGNMENT_LEFT,
+				-1,
+				Themes.get_font_size(),
+				color
 			)
 		else:
 			draw_string(
@@ -158,7 +164,7 @@ func _draw() -> void:
 				string,
 				HORIZONTAL_ALIGNMENT_LEFT,
 				-1,
-				16,
+				Themes.get_font_size(),
 				color
 			)
 		return
@@ -179,7 +185,7 @@ func _draw() -> void:
 				string,
 				HORIZONTAL_ALIGNMENT_LEFT,
 				-1,
-				16,
+				Themes.get_font_size(),
 				color
 			)
 		else:
@@ -189,7 +195,7 @@ func _draw() -> void:
 				string,
 				HORIZONTAL_ALIGNMENT_LEFT,
 				-1,
-				16,
+				Themes.get_font_size(),
 				color
 			)
 		return
@@ -197,7 +203,13 @@ func _draw() -> void:
 	# If there's no intersection with a viewport edge, show string in top left corner
 	draw_set_transform(viewport_poly[0], Global.camera.rotation, Vector2(2.0, 2.0) / zoom)
 	draw_string(
-		font, Vector2(x_offset, font_height), string, HORIZONTAL_ALIGNMENT_LEFT, -1, 16, color
+		font,
+		Vector2(x_offset, font_height),
+		string,
+		HORIZONTAL_ALIGNMENT_LEFT,
+		-1,
+		Themes.get_font_size(),
+		color
 	)
 
 
diff --git a/src/UI/Canvas/Rulers/HorizontalRuler.gd b/src/UI/Canvas/Rulers/HorizontalRuler.gd
index 988f30267..e08ef25d2 100644
--- a/src/UI/Canvas/Rulers/HorizontalRuler.gd
+++ b/src/UI/Canvas/Rulers/HorizontalRuler.gd
@@ -91,7 +91,10 @@ func _draw() -> void:
 			draw_string(
 				font,
 				Vector2(pos.x + RULER_WIDTH + 2, font.get_height() - 4),
-				str(snappedf(val, 0.1))
+				str(snappedf(val, 0.1)),
+				HORIZONTAL_ALIGNMENT_LEFT,
+				-1,
+				Themes.get_font_size()
 			)
 		else:
 			if j % minor_subdivision == 0:
diff --git a/src/UI/Canvas/Rulers/VerticalRuler.gd b/src/UI/Canvas/Rulers/VerticalRuler.gd
index 6911cfff2..fcc11961c 100644
--- a/src/UI/Canvas/Rulers/VerticalRuler.gd
+++ b/src/UI/Canvas/Rulers/VerticalRuler.gd
@@ -86,7 +86,14 @@ func _draw() -> void:
 			var text_xform := Transform2D(-PI / 2, Vector2(font.get_height() - 4, pos.y - 2))
 			draw_set_transform_matrix(get_transform() * text_xform)
 			var val := ((ruler_transform * major_subdivide * minor_subdivide) * Vector2(0, j)).y
-			draw_string(font, Vector2(), str(snappedf(val, 0.1)))
+			draw_string(
+				font,
+				Vector2(),
+				str(snappedf(val, 0.1)),
+				HORIZONTAL_ALIGNMENT_LEFT,
+				-1,
+				Themes.get_font_size()
+			)
 			draw_set_transform_matrix(get_transform())
 		else:
 			if j % minor_subdivision == 0: