Date & Time calculators
Count days, weeks and years precisely: exact age, days between dates, business days, countdowns and date math. TudoCalc's date & time calculators handle deadlines and birthdays without calendar mistakes.
Age
Find your exact age in years, months and days from your date of birth.
Days between dates
Count how many days, weeks and months are between two dates.
Add/subtract dates
Add or subtract days, months and years from a date to find the resulting date.
Business days
Count the business days (excluding weekends) between two dates.
Countdown
See how many days, weeks and months are left until any date — a birthday, a trip, an exam or New Year. The result updates on its own.
Age difference
Calculate the age difference between two people from their birth dates.
Add and subtract time
Add or subtract two periods in hours and minutes and get the total in h:min, decimal hours and minutes.
Day of the week
Find out which day of the week any date fell (or will fall) on.
Leap year
Find out if a year is a leap year, how many days it has and the next leap year.