Date & Time calculators
Date calculations look simple until months of different lengths and leap years get involved. These tools count real calendar days, so an age “as on” a cut-off date or the gap between two dates comes out exactly right.
Ready to use
Start with the age calculator, which gives age in years, months and days on any date.
Coming soon
- Date Difference Calculator
- Time Difference Calculator
- Add Days to Date Calculator
- Business Days Calculator
- Working Hours Calculator
- Countdown Calculator
- Day of the Week Calculator
- Week Number Calculator
- Unix Timestamp Converter
- Time Zone Converter
- Sleep Calculator
Questions
Do these handle leap years?
Yes. Every calculation uses the real calendar, including 29 February.
Which time zone is used?
Dates are treated as calendar days with no time zone. “Today” is taken from your device.