diff --git a/tools/__init__.py b/tools/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tools/calc.py b/tools/calc.py
new file mode 100644
index 0000000..9182698
--- /dev/null
+++ b/tools/calc.py
@@ -0,0 +1,19 @@
+try:
+	while True:
+		w = int(input("width:"))
+		h = int(input("height:"))
+		try:
+			while True:
+				x0 = int(input("x0:"))
+				y0 = int(input("y0:"))
+				w1 = int(input("w1:"))
+				h1 = int(input("h1:"))
+				x1 = round(x0/w, 2)
+				y1 = round(y0/h, 2)
+				x2 = round((x0+w1)/w, 2)
+				y2 = round((y0+h1)/h, 2)
+				print(',{\n      "x_range": '+f"[{x1:.2f}, {x2:.2f}]"+',\n      "y_range": '+f"[{y1:.2f}, {y2:.2f}]"+'\n    }')
+		except:
+			pass
+except:
+	pass
\ No newline at end of file
diff --git a/templates/live_edit.py b/tools/live_edit.py
similarity index 100%
rename from templates/live_edit.py
rename to tools/live_edit.py