Life in Weeks
Your whole life as a grid of weeks: lived, remaining, and the milestones in between.
Open →Age Calculator
Exact age in years, months, and days, plus your age on any date and the next birthday countdown.
Open →Days Between Dates
Days, weeks, months, and weekdays between any two dates.
Open →Date Calculator
Add or subtract days, weeks, months, and years from a date.
Open →Countdown to a Date
Live countdown to any date and time, with a shareable link.
Open →Online Timer
Simple countdown timer with an alarm, presets, and a full-screen view.
Open →Stopwatch
Stopwatch with lap times, split averages, and keyboard controls.
Open →Pomodoro Timer
Focus and break intervals with session tracking and sound.
Open →World Clock
Current time in cities around the world, side by side.
Open →Time Zone Converter
Convert a time across several time zones at once, DST-aware.
Open →Meeting Time Planner
Find the overlap in working hours across time zones.
Open →UTC Time Converter
Convert between your local time and UTC / GMT.
Open →New York to London Time
Convert New York (ET) to London (GMT/BST) and back.
Open →Los Angeles to Tokyo Time
Convert Los Angeles (PT) to Tokyo (JST) and back.
Open →Chicago to Sydney Time
Convert Chicago (CT) to Sydney (AEST/AEDT) and back.
Open →Business Days Calculator
Working days between two dates, with US federal holidays excluded.
Open →Add or Subtract Business Days
The date that is N business days before or after a start date.
Open →Workday Count
How many working days are in a month, quarter, or year.
Open →Deadline Calculator
Due dates from a start date in calendar or business days.
Open →Day of the Week
What day of the week any past or future date falls on.
Open →Week Number
ISO week number for any date, and the current week.
Open →Day of the Year
Day number of the year, days remaining, and year progress.
Open →Unix Timestamp Converter
Epoch seconds or milliseconds to a human date and back, live.
Open →Time Duration Calculator
Add and subtract hours and minutes, or the time between two clock times.
Open →Hours Worked Calculator
Time card: clock in, clock out, breaks, weekly total, and decimal hours.
Open →Sleep Calculator
Bedtimes and wake-up times aligned to 90-minute sleep cycles.
Open →Leap Year Checker
Is it a leap year? List every leap year in a range.
Open →Moon Phase
The moon phase for any date and the next full and new moons.
Open →Sunrise & Sunset
Sunrise, sunset, solar noon, and day length for any location and date.
Open →Birthday Calculator
Day you were born, days until your next birthday, and milestone birthdays.
Open →Cron Expression Generator
Build a cron schedule, read it in plain English, and see the next runs.
Open →Printable Calendar
Clean monthly and yearly calendars for any year, ready to print.
Open →Zodiac Sign
Western and Chinese zodiac sign, birthstone, and generation from a birth date.
Open →Due Date Calculator
Estimated due date, current week, and trimester from your last period or conception.
Open →Dog Age in Human Years
Convert dog and cat years to human years with the modern research formula.
Open →Year Progress
How much of the year, month, week, and day has already passed, live.
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