diff --git a/rainfall_conversion.py b/rainfall_conversion.py
index 5dcc6bc2ec12b33a4ee9804af38772fcd4401428..bf97708bd481a81df68a2497f4e04064c7807c28 100644
--- a/rainfall_conversion.py
+++ b/rainfall_conversion.py
@@ -3,3 +3,5 @@ def inches_to_mm(inches):
 	 return mm 
 
 #TODO add function inches to metres
+
+# TODO  add function inches_to_cm