📅 Advanced Age Calculator
About Age Calculation
This calculator uses the common age system where age increases on birthdays. Note that different cultures may calculate age differently. For example:
- Some cultures count years differently (including/excluding current year)
- Traditional Chinese age counts from 1 at birth and increases at New Year
- Month calculations consider both same-day and end-of-month approaches
Age calculation methods vary culturally, with cultural variations influencing how years are counted. While most Western systems use birthday-aligned calculations (age increases precisely on birth dates), others like Traditional Chinese culture count age from 1 at birth and increment at the New Year. Year-counting differences also arise—some include partial years, others only completed ones. Month-day ambiguity complicates precise calculations due to uneven month lengths (e.g., Feb 28–Mar 31 can be 1 month or 1 month+3 days). This calculator uses same-day monthly cycles (e.g., Feb 20–Mar 20 = 1 month) for consistency, though results may differ across cultural contexts.