Speaking English - Talking about your age

Got Point:
How old  are you ?
I have 23.
My International age 23. 

I am 23 (years old)
I am in my early(0-3)/mid(3~6)/late(7 ..)/teens. 20's . 30's

ex: I am in my 30's early.




Baby : 3 months old
Toddler: 2 years ~ 4 years
Child:  4 ~ 12 years
Teen(ager): 13
Adult: Over the hill
Senior:    60 ~ 65
Elderly:   60 ~ 65
One foot in the grave.