diff --git a/rainfall_conversion.py b/rainfall_conversion.py
index 452666c7c6ea2fe0a81e8c38325e4680af19122c..bf97708bd481a81df68a2497f4e04064c7807c28 100644
--- a/rainfall_conversion.py
+++ b/rainfall_conversion.py
@@ -2,4 +2,6 @@ def inches_to_mm(inches):
 	mm = inches * 25.4
 	 return mm 
 
+#TODO add function inches to metres
+
 # TODO  add function inches_to_cm