What height will i reach?

Question

i am 15 and 3 months

i have size 10 UK or size 11 US feet and 8 inch hands (20.5 cm)

i am 5ft 8.5

i have no armpit hair or facial hair

my voice is changing abit

no grwth spurts yet

my dad is 5ft 8 (5ft 4 at my age)

my mum is 5ft 5

my uncles are 5ft 9 and 5ft 10

my aunties are 5ft 4 and 5ft 7

my grandad is 5ft 7 (was 5ft 10 at 30)

my grandma is 5ft 6

Answer 1

you well could be the tall kid in the family.  You might hit six feet or better.  

Just understand that you may not have growth spurts.  You might just add height gradually during puberty.  Some guys are just like that.  

Also, look at any cousins you have that are near or slightly older than you.  That might give you some kind of hint.  But, it does sound like you could grow some more.

Answer 2

To My Calculations Approx. - 6 Foot 4

Answer 3

About 5 ft 4 (when you are 80yrs old)