BBC Two HD will launch at 6am on March 26 and will be available on Sky HD (169), Freeview HD/YouView (102), Virgin Media (187), Freesat HD (109) and BT Vision (852).
The channel will be a HD simulcast network of BBC Two, airing new programmes such as Paul Hollywood - Bread, The Fall, Science Britannica and Keeping Britain Alive, along with channel stalwarts such as Mock the Week, QI and Springwatch.
It will replace the BBC HD channel and be available as before as a subscription-free HD network on all platforms.
Launched in December 2007, the BBC HD channel was the UK's first free-to-air high definition television channel, offering HD content from all BBC channels.
But after BBC One HD launched in November 2010, the corporation decided to rejig its HD networks. The transition to BBC Two HD was approved by the BBC Trust in 2011 as part of the Delivering Quality First efficiency drive.
BBC Two controller Janice Hadlow said: "BBC One HD has already proved to be highly valued by our audiences and I'm delighted that we're able to follow this with the launch of BBC Two in HD.
"The launch of BBC Two HD will allow us to showcase more of our programmes at their very best - helping to highlight our commitment to high quality, engaging and ambitious programmes on BBC Two."
It is unclear where HD content from BBC Four and BBC Three may be made available, although it can still be offered via on-demand platform BBC iPlayer.
> Freeview could get ten more HD channels under Ofcom proposal
> Fifth Freeview HD channel slot still up for grabs