Date & Time Tools — Time Zones, Date Calculators, Timestamps

Convert time zones and plan meetings, count days between dates, add or subtract days, calculate age and convert Unix timestamps. Everything runs in your browser.

Time Zone Converter Pick a date and time in one place and see it everywhere else at once.
Days Between Dates Find out how many days there are between two dates — for deadlines, holidays, contracts or countdowns.
Date Calculator What date is 90 days from today?
Age Calculator Enter a date of birth to get the exact age today, or on any other date — in years, months and days, with the total number of days lived and a countdown to the next birthday.
Unix Timestamp Converter Convert a Unix timestamp to a readable date, or a date to a timestamp, in any time zone.
Chinese Lunar Calendar Converter Find the lunar date of any day, or the Gregorian date of a lunar birthday or festival.
Online Countdown Timer Set a countdown for cooking, workouts, exams or meetings.
Online Stopwatch Time runs, speeches or experiments to the hundredth of a second.
Business Days Calculator Find how many working days fall between two dates, or which date is a given number of working days before or after another.
What Week Is It? See today's week number, the day of the year and how many days are left.
Hours Calculator Work out how many hours you worked from your start and end times.
The 24 Solar Terms See the current and next Chinese solar term, then choose a year from 1901 to 2099 for a complete table of dates and transition times in Beijing time (UTC+8).
Add or Subtract Time Calculator Start with a clock time, choose add or subtract, and enter a duration.
Zodiac Sign Calculator Enter your date of birth to get both your Western star sign and your Chinese zodiac animal.
Pomodoro Timer Work in Pomodoro rounds — focus for 25 minutes, take a 5-minute break, and take a longer break after every four rounds.
Days Until Countdown See at a glance how many days are left until Christmas, New Year’s Day, Thanksgiving, Mother’s Day, Halloween or Chinese New Year.
Printable Calendar 2027 with Holidays Pick a year and a layout and get a calendar ready to print — the whole year on one page, or one month per page with roomy boxes to write in.
Day of the Week Calculator Pick any date to see what day of the week it falls on, together with its week number, day of the year and how many days from today.
World Clock What time is it right now in London, Sydney or Los Angeles?
Sunrise and Sunset Times When does the sun rise and set today?
Printable Weekly Planner Print a weekly planner that fits how you work — a box for every day, a list of top priorities and space for notes.
Printable Habit Tracker Build habits one tick at a time.
Christmas Countdown How long until Christmas?
New Year Countdown Count down to the New Year with a big live clock — days, hours, minutes and seconds until midnight on 1 January in your own time zone.