diff --git a/Avoiding-pitfalls.md b/Avoiding-pitfalls.md
index e354a66..6aeaeae 100644
--- a/Avoiding-pitfalls.md
+++ b/Avoiding-pitfalls.md
@@ -13,6 +13,8 @@ There are basically two reasons why they may fail:
 
 So, if you are sure the JSON string is correct and you still can't parse it, you should try to increase the size of the `StaticJsonBuffer`.
 
+You can use the [JsonBuffer size calculator](https://bblanchon.github.io/ArduinoJson/) to compute the required size.
+
 #### 2. Make sure everything fits in memory
 
 You may go into unpredictable trouble if you allocate more memory than your processor really has.