How old are each of the main characters in lore?

[JiraTyanu]

I am curious and also to kinda settle some debates like for example "Alisae is 16" or "Minfilia is 18."

[GoldStarz]

It's basically impossible to pinpoint exact ages given that the MSQ is intentionally vague about how much time has passed since ARR started and Shadowbringers complicates things further since most of the Scions now have chronological ages that are different from their physical ones. Their age at this point largely comes down to headcanon at this point and any listed age is more of "they are at least this many years old."

[WhiteArchmage]

The Scions are stated to have kept themselves younger with magic... though now that I say it out loud I have no idea if that's canon or headcanon that got shared a lot.

Ryne and Gaia are in their teens, Gaia may be a little older than Ryne, though. Which should put Ryne at 15-16 and Gaia at 16-17, maybe?
The twins are in the range of 16.
Minfillia... is weird, because she was a teenager in 1.0, possibly 16+, which would make her at least 20 in 2.0.
Everyone else ranges from their early 20s to... well, possibly in their 60s or more considering how some races age and their lifespans.

Do the Lorebooks give precise ages? Don't think I've seen references to that.

[Duskane]

minfillia 27
Thancred 33
Urianger 29
yshtola 23
twins 16
Lyse 25

[MrThinker]

According to the Encyclopaedia Eorzea volume 1 - At the begining of ARR:

Alphinaud and Alisaie are 16
Urianger is 29
Thancred is 32
Minfilia is 27
Y'shtola is "Forever 24" (She's probably actually around Thancred's age, since she has a younger sister who is 26)
Lyse (as Yda) is 25
Papalymo is 42
G'raha is 24
Arenvald is 19
Estinien is 32

These are their minimum ages plus your headcanon timeframe for how long the story actually takes place.

[MoofiaBossVal]

Alphinaud, Alisae, and Lyse are teenagers. The Twins spent 1 year on the First so they might be in their 20s by now. Tataru might be a teenager or in her early teens.

Papalymo seems to have been in his 30s or 40s.

Y'shtola seems to be in her 20s, but she acts like she's in her 30s so maybe she is? Spent like 3 years on the First IIRC.

Urianger seems to be in his 30s. Spent like 3 years on the First.

Minfillia couldn't have been any older than 23 or 24 by ARR. In the 1.0 Ul'dah intro cutscene which takes place 10 years before 2.0, she's a little kid, no older than 13 or 14.

Thancred: In the 1.0 Ul'dah intro cutscene (which takes place 5 years before 1.0 takes place, which takes place 5 years before 2.0 takes place), Thancred looks exactly the same as he does today. So assuming he was 18-20 years old back then, and at least 10 years have passed, then he should be at least 30 by the time of ARR. Then he gets isekaied to the First and was there for 5 years, so he should be either in his mid to late 30s, or possibly his 40s. The Shadowbringers cinematic makes him look like he is in his late 40s or 50s. It's bizzare because he still looks like he is in his early 20s ingame.

Krile seems to be in her 20s.

Nanamo seems to have been a teenager or in her early 20s.

Merlwyb seems to be in her 30s.

Kan-E-Seena appears to be in her 20s but might be older due to magic or immortality or something.

Raubahn seems to be in his late 40s or 50s. The Ala Mhigo civil war against the Mad King began 25 years ago (Garlean conquest was 20 years ago), and in Stormblood 4.0 we get a flashback to when Raubahn and Illberd were first recruited to join the war against the Mad King, and they looked to be in their 20s.

Hien and Aymeric seem to be in their mid to late 20s, possibly early 30s.

The game is extremely vague on how much time passes over the course of the story, but by Shadowbringers 5.1, at least two years must have passed since ARR. After ARR 2.0, the Doman Resistance makes their move and try to revolt and fail. The Doman refugees travel by ship from Doma to Ul'dah, a voyage that would have taken months. In Stormblood, the heroes travel by ship from Limsa to Kugane multiple times, and that voyage takes months. You also had Thancred and Estinien travelling to Garlemald and back on foot during the story, which would have taken months. So the Twins and Lyse are almost certainly in their early 20s by now.

[Rannie]

/snip

the times they spent on the 1st have no bearing on their ages due to the fact that they weren't there in Physical body and had a temporary body created. (Case in point look at Cylva, then look at how long she's been wandering around on the first after she had been put in suspended animation after dying on the 13th by Elidibus. If it's not your home shard, you DON'T age unless you come there with an actual physical body.) There were only two people from the Source that would have and DID age. One was G'raha Tia but his life was prolonged due to him Merging with the Crystal Tower and thus aging but not dying, and the PC due to being summoned there completely.

Taking out head canon which is not valid canon in a lore forum for exacts. The Twins as was said before are 16 and the others are they're respected ages from the beginning of 2.0.

The intro cutscene for 1.0 for thancred and ALL the other people in the CIRCLE OF KNOWING. Happened 10 years before the start of 1.0 NOT 5 the echo flashbacks from 1.0 are that old as well. it's give you the actual time frame on the EVENTS including the DEATH of Warburton on page 51 and 52ish of the Encyclopedia Eorzea... (also the some 15 years ago before ARR, due to the simpsonesq time bubble that the story is in Minfillia herself comments that SOME 15 years had passed since her father died while they were all moving to the RISING STONES.)

[Iscah]

There were only two people from the Source that would have and DID age. One was G'raha Tia but his life was prolonged due to him Merging with the Crystal Tower and thus aging but not dying

Actually he stopped aging completely (confirmed in question 2 here) and isn't really mortal any more. His white-tinged hair seems to be part of the crystallisation effect rather than from age.

Anyway, even though he's back to his younger mortal body, his mind is a lot older - 120ish now, give or take how much time he spent in the dark future timeline and exactly how many years ago he arrived in the First.

[Rannie]

Actually he stopped aging completely (confirmed in question 2 here) and isn't really mortal any more. His white-tinged hair seems to be part of the crystallisation effect rather than from age.

Anyway, even though he's back to his younger mortal body, his mind is a lot older - 120ish now, give or take how much time he spent in the dark future timeline and exactly how many years ago he arrived in the First.

Ah i misunderstood that portion of it then lol thanks Iscah.

[Brightamethyst]

IIRC we don't know how old Y'shtola is. We know she stopped aging at 23(ish) but we don't know how long ago that was.