Date & Time Tools
Count days, compare time zones, run a stopwatch or convert a timestamp. Time zone maths uses your browser's own IANA database, so daylight saving is handled correctly.
Age Calculator
Your exact age in years, months and days — plus the next birthday.
Date Difference Calculator
Time between two dates in years, months, weeks and days.
Days Between Dates
The number of days from one date to another.
Add or Subtract Days
Find the date a number of days, weeks or months away.
Business Days Calculator
Count working days between dates, skipping weekends and holidays.
Time Duration Calculator
Time between two times, and add or subtract durations.
Unix Timestamp Converter
Convert Unix timestamps to dates and back.
Time Zone Converter
Convert a time between any two time zones.
World Clock
Current time in cities around the world, side by side.
Stopwatch
Start, stop and record laps, accurate to hundredths.
Timer
Count down from any duration, with an alert at zero.
Countdown Timer
Count down to a specific date and time.