2. KNOWLEDGE, Development

Online calculator: Calculate age & time difference

You can use this online calculator 🧮 to determine your age and time difference in various notations:

  • Calendar notation: years+months+days.
  • Scientific Noation: only days.
  • Gynecological notation: weeks+days.

Some of our other online calculators require the age in these notations.

Online-Rechner – Lebensalter & Zeitdifferenz

Operating instructions Online calculator

With this online calculator you can calculate the number of days or the number of weeks and days or the number of years, months and days between two dates.

The input fields are highlighted in green.
The calculated results are highlighted in pink.

Data to be entered:

  • Start datee.g. birthday, day of embryo transfer, day of fertilization, etc. (is preset to today’s date).
  • End datee.g. day of delivery, etc. (is preset to today’s date).

Calculated results:

  • Age in Y+W+DCalendar-based age information in cumulative years, months and days.
  • Age in daysScientific age in days only.
  • Age in W+TGynecological age in weeks and days, as is usual for many pregnancy calculations in the context of pregnancy.