Date & Time Tools
Date calculators, timezone converter, stopwatch, timers, and more.
Date Calculator
Add or subtract days, weeks, months, and years from a date.
Date Difference Calculator
Calculate the difference between two dates in various units.
Date Format Converter
Convert dates between different format patterns.
Timezone Converter
Convert times between different timezones worldwide.
World Clock
View the current time in multiple timezones simultaneously.
Stopwatch
A simple stopwatch with lap timing support.
Countdown Timer
Set countdown timers with audio alerts.
Pomodoro Timer
A Pomodoro technique timer with work and break intervals.
Age Calculator
Calculate exact age in years, months, and days from a birthdate.
Business Days Calculator
Calculate business days between dates, excluding weekends and holidays.
Week Number Calculator
Find the ISO week number for any date.
Leap Year Checker
Check if a year is a leap year and find nearby leap years.
Calendar Generator
Generate printable calendars for any month or year.
ISO 8601 Formatter
Format dates and times according to the ISO 8601 standard.
Relative Time Calculator
Calculate relative time descriptions (e.g., "3 hours ago", "in 2 days").