Our free date and time calculators help you work with dates, times, and schedules quickly and accurately. Whether you need to count the days between two dates, find out someone’s exact age, plan a countdown to an important event, or calculate working days for a project deadline, our tools handle it all instantly — no login or download required.
Date Calculators
- Age Calculator — Find your exact age in years, months, days, hours, and minutes from any birthdate.
- Days Between Dates Calculator — Count the exact number of calendar days between any two dates.
- Age Difference Calculator — Find the age difference between two people or two dates.
- Countdown Calculator — Count down the days, hours, minutes, and seconds until any future event.
- Workdays Calculator — Calculate the number of business days between two dates, excluding weekends.
Time Calculators
- Time Duration Calculator — Calculate the total time between two times, including across midnight.
- Time Zone Converter — Convert a time from one time zone to another with a world clock reference.
- Unix Timestamp Calculator — Convert between Unix timestamps and human-readable dates and times.
All date and time calculations account for leap years, daylight saving time (where applicable), and varying month lengths to ensure accuracy. These tools are especially useful for project management, event planning, legal deadlines, and personal milestones.