Date & Time Tools
Date and time calculators, converters, and utilities
20 tools
Date Difference Calculator
Calculate days, weeks, months between dates
Date Add/Subtract
Add or subtract days, months, years from a date
Age Calculator
Calculate age from birthdate
Timezone Converter
Convert time between timezones
World Clock
View current time in multiple timezones
Countdown Timer
Countdown to a specific date and time
Stopwatch
Online stopwatch with lap times
Pomodoro Timer
Pomodoro technique timer for productivity
Week Number Finder
Find the week number of any date
Day of Year Calculator
Find which day of the year a date is
Leap Year Checker
Check if a year is a leap year
Weekday Finder
Find the day of the week for any date
Date Formatter
Format dates in various patterns
Relative Time Calculator
Convert dates to relative format (2 days ago)
Cron to Human Readable
Convert cron expressions to readable text
Calendar Generator
Generate printable calendars
ISO Week Calculator
Calculate ISO week numbers
Epoch Converter
Convert epoch/Unix timestamps
Time Duration Calculator
Calculate duration between times
Unix Time Converter
Convert Unix timestamps to dates
About Date & Time Tools
Date and time calculators, converters, and utilities
Browse 20 free online date & time tools tools designed for quick results, clean output, and reliable use on desktop and mobile devices.