diff --git a/lib/constants.json b/lib/constants.json
index b8077cf5311..fea33d4bd58 100644
--- a/lib/constants.json
+++ b/lib/constants.json
@@ -7,7 +7,7 @@
   "HTTP_BAD_REQUEST": 400,
   "ENTRIES_DEFAULT_COUNT" : 10,
   "PROFILES_DEFAULT_COUNT" : 10, 
-  "MMOL_TO_MGDL": 18,
+  "MMOL_TO_MGDL": 18.018018018,
   "ONE_DAY" : 86400000,
   "TWO_DAYS" : 172800000,
   "FIFTEEN_MINUTES": 900000,