Tory MP Michelle Rempel, chair of the convention's host committee, says the party's main concern is the safety and security of everyone affected.
Party president John Walsh says it became clear that holding the convention on Thursday wouldn't be in the best interests of Calgary's residents as it would take first responders away from their current work.
Flooding from the city's rivers has forced people living in more than two dozen neighbourhoods from their homes.
The city's downtown is likely to remain under water until the middle of next week.
The Conservative Party holds its national convention every two years _ this was the first one to take place in Calgary.
The party says it will set a new date for the convention.
The Conservatives were looking forward to the convention as a chance to get back on course after a few rough weeks of scandal, particularly over Senate expenses.
Also on HuffPost