How Old Was I On That Date?
This calculator tells you your exact age on any date in the past — useful for forms, records, anniversaries and school-entry cut-offs.
Enter a date of birth and a later date.
Other age tools
About this tool
This calculator tells you your exact age on any date in the past — useful for forms, records, anniversaries and school-entry cut-offs. For your exact age in years, months and days use the age calculator. Related tools: date calculator, time calculator, day of the week, event countdowns.
Frequently asked questions
How do I work out how old I was on a specific date?
Subtract your date of birth from the chosen date. The result is broken down into complete years, then months, then days, so you get your exact age on that day.
Can I use a future date?
Yes. The same maths gives your age at any date, past or future — the 'age at' field accepts any date after your birth date.
Does it handle leap days?
Yes. The calculation uses real calendar dates, so leap years and differing month lengths are accounted for automatically.