10 working tools
Date & Time tools
Calculate dates, durations, ages, workdays and timestamps.
- Compare and adjust calendar dates
- Calculate ages and durations
- Convert Unix timestamps
10browser-based toolsNo account required
Age CalculatorCalculate exact age in years, months and days.Date Difference CalculatorFind the duration between two dates.Add Days to DateAdd or subtract calendar days from a date.Business Days CalculatorCount weekdays between two dates.Day of Week FinderFind the weekday for any date.Unix Time ConverterConvert dates to Unix time and Unix time to dates.Time Duration CalculatorCalculate elapsed time between two times.Countdown CalculatorSee the exact time remaining until a date.Week Number CalculatorFind the ISO week number for a date.Leap Year CheckerCheck whether a year is a leap year.
About this collection
Practical date & time tools, without the clutter.
Dates look simple until calendars, leap years, time zones and business days get involved. Counting by hand is slow, and small assumptions can shift the answer by a day.
These tools make the chosen dates and rules visible. They are useful for planning and checking, while time-zone-sensitive or legal deadlines should still be confirmed in their official context.
Worth checking: A date without a time zone is not a universal moment. Confirm the intended zone when a deadline, log entry or event crosses regions.