Can we convert Master Detail to Lookup in Salesforce?

Hi Ratnesh,

We can convert  Master Detail to Lookup Relationship if  no roll-up summary fields exist on the master object.

You can convert a master-detail relationship to a lookup relationship as long as no roll-up summary fields exist on the master object. You can convert a lookuprelationship to a master-detail relationship, but only if the lookup field in all records contains a value.