Date & Time Tools
Dates, time zones, countdowns and working-day calculators.
Calculate ages, the time between dates and business days, and convert between time zones and date formats. Calculations run in your browser, using your device's clock and time zone settings where relevant.
Tools in this category
Age Calculator
Calculate exact age in years, months and days, plus total days lived and the next birthday.
Date Difference Calculator
Find the time between two dates in years, months, weeks and days, with or without the end date.
Working Days Calculator
Count working days between two dates, excluding weekends and the holidays you list.
Business Days Calculator
Add or subtract business days from a date to find deadlines and delivery dates.
Time Zone Converter
Convert a date and time between any time zones, with daylight-saving time handled automatically.
Days Between Dates
Count the number of days between two dates, and how many of each weekday they contain.
Countdown Calculator
Count down live to any date and time: days, hours, minutes and seconds remaining.
Unix Timestamp Converter
Convert Unix timestamps (seconds or milliseconds) to dates and dates back to timestamps.
Meeting Time Planner
Find meeting times that fall within working hours across several time zones.
Date Add/Subtract Calculator
Add or subtract years, months, weeks and days to a date and get the resulting date.
Time Duration Calculator
Calculate the duration between two times, or add and subtract hours and minutes.