A pedestrian underpass connects T-Centralen to the nearby Central Station running underneath Vasagatan.

On 31 August 1975, the Blue Line opened, running to Hjulsta via Hallonbergen and Rinkeby.

[6] Shortly after the opening, on 27 January 1958, the station was renamed T-Centralen to incorporate the letter symbol "T" for tunnelbana (the Swedish word for Metro - literally "Tunnel-Rail"), to end the confusion with the railway station which had been occurring.

[7] T-Centralen has two separate sets of platforms, connected by a long moving walkway on a mezzanine level.

The station is located under Klara Church and Åhléns City department store.

The lower level is 14 metres below ground, and serves the southbound Green line and northbound Red line, allowing cross-platform interchange between opposite-direction trains between these two lines; Gamla stan and Slussen, the next two stations to the south, are similarly arranged to allow easy transfers between trains going in the same direction.

The station lies under the Åhléns department store and Centralposten post office.