Some 600 firefighters battled the blaze for 15 hours. The main structure of the 850-year-old building was saved, including its two bell towers.
Macron set a five-year goal for the reconstruction of the Catholic church shortly after the fire.
An estimated 2,000 masons, carpenters, restorers, roofers, foundry-workers, art experts, sculptors and engineers worked on the project, which reportedly cost €700m (£582m).
Tickets for the first week of Masses in the cathedral sold out in 25 minutes, the cathedral’s rector said.
Archbishop Laurent Ulrich will lead more than 1,500 guests through the reopening service on Saturday.