Last year's tournament was watched by 24.5m viewers, with a peak of 9.4m tuning in to see Wales clinch the crown by beating England.
A record high average audience of 5.1m viewers enjoyed the BBC's live coverage in 2013 and this year those tuning in will be able to enjoy Sir Ian McGeechan's expert views, with the former Scotland player and coach joining the television team.
Each match will be covered live on Radio 5 live or 5 live sports extra, with the exception of France v Italy on Sunday February 9 which will have live updates on Radio 5 live.
There will also be live streams of every match, available across four screens - PC, tablet, mobile and connected TV, with the BBC Sport website also offering comprehensive coverage of the tournament at www.bbc.co.uk/sport.
All content will also be available via the BBC Sport app for mobile and tablet devices, available for free on iPhone, iPad, Android and Kindle Fire, with the BBC iPlayer offering full coverage of each match up to a week after the live game.
A special preview programme, Inside 6 Nations, will be broadcast before each weekend of the tournament on the BBC News Channel, while Matt Dawson will host an RBS 6 Nations preview show on Radio 5 live on Thursday 30 January, 1930 - 2100.
The BBC will also be offering live coverage of the Women's Six Nations with England v Ireland on February 22 available on the Red Button and live streams available on the BBC Sport website, while the same game and England v Wales on March 7 will be available on 5 live sports extra.
The full story of the women's tournament including news and highlights being reported across the BBC Sport website.
Barbara Slater, Director BBC Sport, said: "As we look forward to the first major sporting event of 2014. I am delighted that the BBC will once again deliver an event that unites the nation and thrills audiences of all ages and hope that rugby's biggest annual competition continues to grow even more popular."
BBC Cymru Wales will have match commentary of the Welsh games on television, radio and online. On television, there will be live coverage of each game on BBC One Wales and Y Clwb Rygbi Rhyngwladol is a BBC Cymru Wales production for S4C featuring Welsh commentary.
Scrum V Live Under 20's will be broadcast live from Eirias Park in North Wales on Friday 31 January at 7pm when Wales face Italy and on Friday 7 February at 7.30pm for the Ireland v Wales match live from Athlone.
A new series of Scrum V Classics will be broadcast on the Thursday or Friday prior to the Wales games on BBC 2 Wales. Contributors will include Colin Charvis, Adrian Hadley, Mike Rayer, Ryan Jones and Gerald Davies.
On Radio Cymru, Yn y Ryc take a light-hearted look at the RBS 6 Nations tournament on match days BBC Radio Cymru's Camp Lawn will bring listeners all the excitement of the game.
BBC Radio Wales is Wales' RBS 6 Nations Station with extensive coverage across the output including news and analysis, comedy, big-match build-up, live commentary and post-match phone-ins.
BBC Scotland and BBC Radio Scotland will have live coverage of all of Scotland's games and a 30 minute documentary reflecting on Scotland's 1984 Grand Slam win will broadcast on BBC Two Scotland ahead of the tournament.
BBC Northern Ireland will have all of Ireland's games live on BBC Radio Ulster with outdoor broadcasts from the home games at the Aviva Stadium. BBC Newsline and the BBC Sport NI website will also have extensive preview and analysis of all Irelands games throughout the tournament.