Dates and Time
Whether you need to calculate the number of days between two dates, figure out someone's exact age in years and months, add or subtract time durations, find the best dates for a vacation by maximizing public holidays, or use a simple countdown timer, these tools deliver instant answers.
The date calculator adds or subtracts days, weeks, months, and years from any date.
The age calculator gives you the precise age in years, months, and days from a birth date. The time calculator handles hours, minutes, and seconds for scheduling and duration problems.
The time off optimizer analyzes public holidays to suggest the most efficient vacation dates.
The timer provides a simple countdown for meetings, cooking, or productivity sessions.
These tools are used by HR professionals planning staffing calendars, project managers calculating sprint deadlines, students figuring out submission cutoffs, and travelers planning trips around local holidays.
All calculations happen in your browser with no data sent to servers, so you can safely input personal information like birthdates.
Bookmarking the timer means you always have a quick, distraction-free countdown available without installing a browser extension or a dedicated app.
Frequently Asked Questions
Does the date calculator account for leap years?
Yes.
All date calculations correctly handle leap years, varying month lengths, and timezone-independent date arithmetic.
Which country's public holidays does the time off optimizer use?
The time off optimizer supports multiple countries.
You can select your country to get accurate public holiday data for that region.
Can I calculate age from a future date?
The age calculator works with any past date.
For future dates it will show the time remaining rather than elapsed age.
Does the timer work when I switch browser tabs?
Yes.
The timer continues counting in the background and will alert you when it reaches zero, even if the tab is not active.