Dates and time
Calculate ages, date differences, durations, and times using explicit conventions.
10 calculators available
- Dates and time
Age calculator
Calculate age in years, months and days at a chosen reference date.
Open : Age calculator - Dates and time
Date difference
Count elapsed calendar days between two dates in either direction.
Open : Date difference - Dates and time
Add or subtract days
Find a date by adding or subtracting a whole number of days.
Open : Add or subtract days - Dates and time
Time duration
Calculate a duration in hours and minutes, on the same day or into the next day.
Open : Time duration - Dates and time
Decimal hours
Convert hours and minutes to decimal hours and back.
Open : Decimal hours - Dates and time
Day of the week
Find the weekday for any supported date.
Open : Day of the week - Dates and time
Business days between dates
Count Monday-to-Friday weekdays between two selected dates.
Open : Business days between dates - Dates and time
Unix timestamp converter
Calculate unix timestamp converter with clear inputs and assumptions.
Open : Unix timestamp converter - Dates and time
Time zone converter
Calculate time zone converter with clear inputs and assumptions.
Open : Time zone converter - Computing and networkingDates and time
Cron syntax checker
Calculate cron syntax checker using the values and assumptions you provide.
Open : Cron syntax checker