平成23年 (Heisei 23) is 2011 in the Western calendar. Check the age and zodiac below.
Yes. Heisei 23 (平成23年 in Japanese) corresponds to 2011 in the Western calendar.
2011 is the Year of the Rabbit (卯（う） in Japanese) in the 12-year zodiac cycle. In the older 60-year sexagenary cycle (kanshi) it is 辛卯.
It depends on whether they have had their birthday yet this year. The box near the top of this page calculates both possible ages automatically from today's date — the lower number is their age before their birthday, the higher number is their age after.
Heisei 23 is written 平成23年 in Japanese. It is also commonly abbreviated H23 — for example on driver's licenses and other government forms.
