Age Calculator
Calculate your exact age in years, months, weeks, and days from your birth date. Also shows upcoming birthday countdown.
Age Information
| Metric | Calculation |
|---|---|
| Years | Complete years since birth |
| Months | Remaining months after years |
| Days | Remaining days after months |
| Total days | Complete days alive |
| Next birthday | Days until next birthday |
Age in Different Units
For someone born exactly 30 years ago:
- 30 years
- 360 months
- 1,565 weeks
- 10,957 days
- ~262,968 hours
- ~15,778,080 minutes
Implementation
``javascript
function calculateAge(birthDate) {
const today = new Date();
const birth = new Date(birthDate);
let years = today.getFullYear() - birth.getFullYear();
const monthDiff = today.getMonth() - birth.getMonth();
if (monthDiff < 0 || (monthDiff === 0 && today.getDate() < birth.getDate())) {
years--;
}
return years;
}
``