明治37年 (Meiji 37) is 1904 in the Western calendar. Check the age and zodiac below.
Yes. Meiji 37 (明治37年 in Japanese) corresponds to 1904 in the Western calendar.
1904 is the Year of the Dragon (辰(たつ) in Japanese) in the 12-year zodiac cycle. In the older 60-year sexagenary cycle (kanshi) it is 甲辰.
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.
Meiji 37 is written 明治37年 in Japanese. It is also commonly abbreviated M37 — for example on driver's licenses and other government forms.