Days between dates
Count calendar days, weeks and weekdays (Mon–Fri) between two dates, or add/subtract days from a start date.
Open calculatorExact age
Counts completed calendar years, remaining months and days up to today’s date, accounting for varying month lengths and leap years. Months run from birthday to the next monthly anniversary; when a month has no such day (the 31st, or 29 February) the anniversary falls on the month’s last day, so the day count is never negative.
Year of birth, e.g. 1995.
Month of birth as a number from 1 (January) to 12 (December).
Day of the month from the date of birth (1–31).
Age is counted up to today’s date on your device. People born on 29 February have their anniversary on 28 February in non-leap years.
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Educational estimate only. Not medical, tax, legal or financial advice.