Date of birth calculator | DOB

Date of Birth Calculator — Age in Minutes, Days, Months, Years
DOB Calculator
Calculate age precisely — minutes, days, months, years

Date of Birth Calculator

Enter your date and time of birth (if known). The calculator will show completed years, months, days, hours and minutes — plus totals in minutes, days and months.

Completed years
Completed months (after years)
Completed days (after months)
Hours (after days)
Minutes (after hours)
Total days completed
Total months completed (approx)
Total minutes completed
Timezone: local
Precision: uses local clock
How calculation is done (brief)

The script computes completed years, months, days, hours and minutes by comparing each component and borrowing from larger units when needed (e.g. if minutes negative, borrow an hour). Total minutes/days are computed from the millisecond difference.

Design & accessibility notes

  • Fully responsive — adapts to mobile, tablet, laptop and desktop.
  • Light & dark themes with accessible contrast.
  • Fast loading: single-file, minimal assets, no external fonts required (uses system fonts).
  • SEO-friendly: meta tags, clear headings, accessible labels and ARIA attributes.

30 Related tags

Made with care • Accessible • Responsive

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