Theory:Timeline - The Doctor's age

This page lists the age of the Doctor over the course of the franchise. This timeline is based upon observations of the Doctor Who universe and the events that occur during each of these stories. From these observations we have attempted to build a concise timeline.

First Doctor

 * 8: TV: The Sound of Drums
 * The Tenth Doctor recounts being taken to look into the Untempered Schism at the age of 8.


 * 90: TV: The Stolen Earth
 * The Tenth Doctor recounts going to the Medusa Cascade at the age of age 90, and claims he was just a kid.


 * 236: TV: The Pirate Planet, The Name of the Doctor
 * Romana informs the Fourth Doctor that he has been operating the TARDIS for 523 years, and she claims the Doctor is 759, not 756.

Second Doctor

 * ~450:	TV: The Tomb of the Cybermen
 * The Doctor supposes he's about 450 years old in "Earth terms."

Third Doctor

 * 1000s?: TV: Doctor Who and the Silurians
 * The Doctor claims his life covers several thousand years. (Later stories would not support this claim.)


 * 1000s?: TV: The Mind of Evil
 * The Doctor claims to have been a scientist for several thousand years. (Later stories would not support this claim.)

Fourth Doctor

 * ~750:	TV: Pyramids of Mars
 * The Doctor claims to have lived for "something like" 750 years.


 * 749: TV: The Brain of Morbius
 * The Doctor claims to be only 749 years old.


 * 749: TV: The Seeds of Doom
 * The Doctor claims to be only 749 years old, and used to be even younger.


 * 750: TV: The Robots of Death
 * The Doctor claims to be 750 years old.


 * 756 or 759: TV: The Ribos Operation
 * The Doctor claims to be 756 years old. Romana insists he is 759.


 * <760: TV: The Power of Kroll
 * The Doctor claims to be nearly 760 years old.

Fifth Doctor

 * 813: PROSE: Cold Fusion
 * The Doctor claims to be 813 years old.


 * ~900: AUDIO: Omega
 * The Doctor claims to be "pushing 900" years old.

Sixth Doctor

 * 900: TV: Revelation of the Daleks
 * The Doctor claims to be 900 years old.


 * 900: TV: The Mysterious Planet
 * The Doctor claims to be 900 years old, and in the prime of his life.


 * 953: TV: Time and the Rani
 * The Seventh Doctor claims to be 953 years old immediately after regeneration.

Seventh Doctor

 * 953: TV: Time and the Rani
 * The Doctor claims to be 953 years old, and is the same age as the Rani.


 * 1000: Prose: Set Piece
 * The Doctor celebrated his 1,000th birthday while travelling with Ace and Bernice Summerfield.


 * ~1009: PROSE: Vampire Science
 * The Eighth Doctor estimates his previous incarnation regenerated at 1009 years old.

Eighth Doctor

 * "3" (~1012): PROSE: Vampire Science
 * Three years after regeneration, the Eighth Doctor calculated his age to be 1012. He was unsure and might have lost count, and so preferred to simply begin counting at his most recent regeneration, giving his age as "three" when asked.


 * 1018: (PROSE: Autumn Mist)
 * The Doctor claims to be 1018 years old.


 * 1125: PROSE: The Ancestor Cell, Escape Velocity
 * The Doctor is trapped on Earth for 13 and the year 2001, making him at least 1125 by the end of this crisis.


 * (AUDIO: Neverland)
 * While travelling with Charley Pollard, the Doctor said he was "nine hundred and fifty something years old".


 * (AUDIO: The Twilight Kingdom)
 * Not long after, while travelling in the Divergent Universe, he was noted to have had "over a thousand years worth of collected experience" by a cave creature in the form of Major Koth.


 * (AUDIO: Orbis)
 * While travelling with Lucie Miller, the Doctor spent 600 years on the planet Orbis. He later mentioned that he rounded and adjusted his age based on different year lengths in different parts of the universe, claiming that in one obscure galaxy he would be two years old.

War Doctor

 * ~800: TV: The Day of the Doctor
 * The Eleventh Doctor claims to be "1200 something" years old, and the War Doctor claims to be 400 years younger.

Ninth Doctor

 * 900: TV: Aliens of London
 * The Doctor claims that he is 900 years old.

Tenth Doctor

 * 903: TV: The Voyage of the Damned
 * The Doctor claims that he is 903 years old.


 * 904: TV: The Day of the Doctor
 * The Doctor claims that he is 904 years old.


 * 906: TV: The End of Time
 * DOCTOR: The Doctor claims that he is 906 years old.

Eleventh Doctor

 * 907: TV: Flesh and Stone
 * The Doctor claims that he is 907 years old.


 * 907: TV: Amy's Choice
 * The Doctor claims that he is 907 years old.


 * 908: TV: The Impossible Astronaut
 * Amy says the Doctor was claiming that he is 908 years old last time she saw him.


 * 909: TV: The Impossible Astronaut
 * The Doctor claims that he is 909 years old.


 * ~900: TV: The Doctor's Wife
 * In the body of Idris, the TARDIS claims to have been with the Doctor for 700 years, and the Doctor stole her/she stole him in his 200s.


 * ~1008: TV: Night Terrors
 * The Doctor claims to have loved bedtime stories about a thousand years ago, when he was George's age of 8 years old.


 * 1103: TV: The Impossible Astronaut
 * Just before his "death" at Lake Silencio, the Doctor claims that he is 1103 years old.


 * 1200: TV: A Town Called Mercy
 * The Doctor claims that he is 1200 years old, and has matured.


 * ~1100: TV: Journey to the Centre of the TARDIS
 * The Doctor claims to have piloted the TARDIS for 900 years, and was over 200 when he "borrowed" her.


 * ~1200?: TV: The Day of the Doctor
 * The Eleventh Doctor claims to be "1200 something" years old, but admits he loses track and doesn't remember if he's lying.


 * ~1500: TV: The Time of the Doctor
 * The Doctor claims to have spent 300 years on Trenzalore before the TARDIS returned to him.


 * 2000+: TV: The Time of the Doctor, Deep Breath, PROSE: Tales of Trenzalore: The Eleventh Doctor's Last Stand
 * Right after regeneration, the Twelfth Doctor claims to be over 2000 years old, meaning the Eleventh Doctor spent over 800 years on Trenzalore. (Tales of Trenzalore says he spent 900 years on the planet.)

Twelfth Doctor

 * 2000+: TV: Deep Breath
 * The Doctor claims to be over 2000 years old.


 * +139 years: TV: Before the Flood
 * The Doctor is in stasis from 1980 to 2119. However, he doesn't age physically or mentally during this time.


 * 2000+: TV: The Zygon Inversion
 * The Doctor claims to be over 2000 years old, old enough to be humanity's Messiah.


 * 4,500,000,000?: TV: Heaven Sent, Hell Bent
 * Ohila says the Doctor was in his confession dial for 4.5 billion years. Despite the Doctor dying to create a copy of himself every cycle, the Doctor claims to remember every time.


 * 4,000,000,000?: COMIC: Doorway to Hell
 * The Doctor claims to be 4 billion years old.


 * +24 years: The Husbands of River Song, Extremis
 * The Doctor and River Song spend their last night together on Darillium.


 * +50 or 70 years: TV: The Pilot
 * Bill finds that the Doctor has been at St Luke's University for 50 or even 70 years.


 * 2000+: TV: Smile
 * The Doctor claims to be over 2000 years old, and doesn't always want to take the stairs.


 * 2000: TV: Thin Ice
 * The Doctor claims to be 2000 years old.


 * 2000: TV: Extremis
 * The Doctor claims to be 2000 years old, at his last count.