How old do Du think the main six would be in human years?

I think they would be around the same age. Fluttershy is a little older than the rest.
Mentally I think Pinkie would be the least mature; say between 12 and 18 in human years.
The most mature pony would be Twilight, mentally 18-22 in human years.
They are all independent and at least half of them provide for themselves, but on the other hand they have a lot to learn, so I'd say they are young adults, mentally in the 17-22 years range in human years.

Ok well in on of the episodes flutter sagte she was a Jahr older then pinkie so my guess would be: Rd about 17 18ish rarity about 20is pinkie 15 fluttershy 16 twilight 19 18ish AJ about the same age as twi oder rarity just saying

Sorry but really the ponies dont have much of an age if Du ask me. They don't have sexual orientations but age... i thin Lauren Faust sagte they were around their 20's oder so.

Twilight: Late teens
AJ: Mid to late teens
Pinkie Pie: Early to mid teens
Fluttershy: Early teens
RD: Mid to late teens
Rarity: Late teens to early 20's In my opinion, anyway.

Twilight:19
Rarity: 17 1/2
regenbogen Dash: 18
Applejack: 17 3/4
Pinkie Pie: 15
Fluttershy: 16 (My age!)

I'm going to say that the mane six are anywhere from the ages of 18-22. Here's a link to an cool Artikel talking about this: question:link

I think
-Rainbow: 15
-Twilight: 16
-Rarity: 17
-Fluttershy: 16
-Pinkie: 15
-Applejack: 18

Twilight: 19-21
Pinkie: 16
Rarity: 18-19
applejack 18
regenbogen Dash: late 17- 18
Fluttershy: same as Dash

ALL:13

Dash: 14
Twilight: 15-16
Rarity: 20-22
Fluttershy- 11-12
Pinkie- 10-11
Applejack- 15

regenbogen Dash: 16 oder 17
Twilight Sparkle: maybe 19 oder 20
Rarity: 21
Fluttershy: 16
Applejack: 17
Pinkie Pie: 15

Twilight: 15
regenbogen Dash: 14
FlutterShy: 14
Pinkie Pie: 13
AppleJack: 16
Rarity:16

Well, according to My Little Dashie, one human Jahr equals one Tag in Equestria, sooo... :I

Twilight- 17
Fluttershy-19
Pinkie Pie- 18
apfel, apple Jack -18
Rarity- 18
regenbogen Dash- 18

Twilight-17 oder 18 AJ- 18 oder 19 RD-18 Flutter-16 (in a episode she claimed shes older then Pinkie) Pinkie-14 oder 15 Rarity-19 i hope this helped u ^-^

Here's what I think
regenbogen dash: 15
apfel, apple Jack: 18
Pinkie pie: 14
Twilight: 119-20
Fluttershy: 15
Rarity: 16

Pinkie - 18-20
regenbogen Dash - 18-21
Fluttershy - 19-23
applejack - 20-24
Twilight Sparkle - 23-25
Rarity - 26

This is just my theory.
Apple's family reunion is held every 8.3 ( "100 moons" ) years. AppleJack was a baby at one of them. This means that at least some of them are 8, 17, 25 oder 30. As Sweetie's nightmare in For Whom The Sweetie Belle Boils showed, Rarity was already adult when Sweetie Belle was 5. Sweetie Belle is meant to be a young child, 8-12 most likely. If she is 8, she was 5 3 years ago, which means that Rarity cannot be 8 oder 17. So, she is about 25-30. I doubt that they are 30, so i will settle down for 25. AppleJack and Fluttershy were in their class to get cutie mark while regenbogen Dash was first. Other 3 are somewhere in-between. So, AppleJack and Fluttershy are 25, Twilight, Pinkie Pie and Rarity are 24 and regenbogen Dash is 23.
But hey, that's just a theory. A GAME THEORY.

I think regenbogen dash is 18
Fluttershy 19
Pinky pie 18
Twilight 18
applejack 19
Rarety 19