Date & Time
Age, date difference, time zones and countdown calculators
10 tools available
Calendars
2 toolsDuration
3 toolsTime
4 toolsAbout Date & Time
Handle every date and time need — age, differences, durations, business days and countdowns — with accurate leap-year and calendar handling and results that update as you type.
Free, instant and private: every calculation stays in your browser, so you can plan deadlines, events and schedules without interruption.
Frequently Asked Questions
How does the age calculator handle leap years?▾
It counts exact calendar years, months and days including February 29s, matching official document verification methods used for eligibility checks.
Can I calculate business days excluding weekends?▾
Yes - the business days tool skips Saturdays and Sundays between dates, with optional holiday exclusions for precise project timelines.
Do time zone conversions respect daylight saving?▾
Yes - conversions use the IANA time zone database, so historical and future dates shift correctly across DST transitions.
Are my dates stored anywhere?▾
No. Every calculation happens locally in your browser and disappears when you close the tab.