Return Null if Formula Referenced Field is Null in Formula Field

Question

I want to build a custom formula field in case object. I have picklist field called Efforts. Picklist field values are 1 min, 15 min, 30 min, 1 hour, 2 hours, 4 hours, 1 day, More than 1 day

I am building the formula field like below.

Formula Field(Number) - Return type is number.

Formula Field =

CASE(
     TEXT(Effort__c ),
     "5 min", 5,
     "15 min", 15,
     "30 min", 30,
     "1 hour", 60,
     "2 hours", 120,
     "4 hours", 240,
     "More than 1 day", 960,
     "1 day", 480, 
     0
)

The problem is whenever the field Effor__c is null then this formula field showing the value 0 (as a else condition in case). I want this to be null if the picklist is null.

I've checked Treat blank fields as blanks

Any help is appreciable thanks!

Answer 1

You just need to pass the default NULL instead of 0

Formula Field =

CASE(
     TEXT(Effort__c ),
     "5 min", 5,
     "15 min", 15,
     "30 min", 30,
     "1 hour", 60,
     "2 hours", 120,
     "4 hours", 240,
     "More than 1 day", 960,
     "1 day", 480, 
     NULL
)