How long does CodeIgniter to Laravel migration take?

A small CodeIgniter application (one team, modest custom code, single database) migrates to Laravel in 8 to 16 weeks. A medium application with multiple teams, third party integrations, and significant business logic typically runs 4 to 7 months. Large legacy CodeIgniter codebases (8+ years old, multiple integrations, complex domain logic, low test coverage) take 7 to 14 months and often run as a strangler fig migration rather than a big bang cutover. We share a concrete timeline after the migration audit, never a guess based on lines of code alone. See our migration services for the detailed approach.