User blog:Blue Jay Superior/How Old is the Doctor?

I believe to have calculated the Doctor's correct age as 3781.

Seriously.

I'm serious.

It's probably somewhere around that, at least.

No, check it out.

The First Doctor regenerated at about 450.

The Second Doctor regenerated at about 500.

The Third Doctor regenerated at 748.

The Fourth Doctor regenerated at 813.

The Sixth Doctor regenerated at 953.

We're going to be getting a lot less definite with age after the Sixth Doctor.

The Seventh Doctor... Regenerated at 1009-ish.

We're going to say that the Eighth Doctor regenerated at 1725.

The War Doctor regenerated at about 800- wait, what? This is getting confusing. Let's just assume that Turtle's theory is correct, and he restarted his age when he became the War Doctor, somehow "wearing a bit thin" almost 400 years later than the First Doctor.

The Ninth Doctor may or may not have regenerated at 900.

The Tenth Doctor could have regenerated at 906.

The Eleventh Doctor spent two seasons of rapidly aging, so I'm not going to guess when he regenerated. To make this short, Peter Capaldi claimed that the Twelfth Doctor's exact age was 2055, so I guess we can assume that's how old the Eleventh Doctor was upon regeneration.

The Doctor had a birthday in "Death in Heaven," making him 2056.

Now, adding 2056 and 1725, we should get around the Doctor's exact age (of course, only assuming Turtle's theory is correct).