All Time & Date Tools
55 free tools, grouped by what you're trying to do. No sign-up, nothing to install.
Clock & Time Zones
Compare places, convert offsets, and plan across borders.
- World ClockLive local time in cities worldwide, on a day/night map with working-hours strips.
- Time Zone ConverterConvert a time from one city to any number of other cities and time zones instantly.
- Meeting PlannerFind the best time to meet across multiple cities with an at-a-glance overlap grid.
- Time Difference CalculatorSee the time difference between any two cities, updated live and adjusted for daylight saving.
- Unix Timestamp ConverterConvert Unix epoch timestamps to human dates and back, with a live current timestamp.
- Military Time ConverterConvert 24-hour military time to 12-hour AM/PM time and back, with a full conversion chart.
- Distance CalculatorFind the straight-line distance between any two cities in kilometres and miles.
- Online ClockA large full-screen digital clock showing your current local time, with a fullscreen mode.
- Flip ClockA retro full-screen flip clock with 12/24-hour time and optional seconds.
- Time Unit ConverterConvert between seconds, minutes, hours, days, and weeks instantly.
Calendar & Dates
Make sense of dates, weekdays, ages, and working days.
- CalendarA clean monthly and yearly calendar with week numbers and quick navigation.
- Date CalculatorAdd or subtract days, weeks, months, and years from any date to find a new date.
- Days Between DatesCalculate the exact duration between two dates in days, weeks, months, and business days.
- Age CalculatorFind your exact age in years, months, days and hours, plus your life in numbers: heartbeats, full moons and laps around the sun.
- Dog Age CalculatorConvert dog years to human years by size, with a cat age calculator and a full chart.
- Due Date CalculatorEstimate your pregnancy due date, how many weeks along you are, and your trimester dates from your last period.
- Week NumberLook up the ISO week number for today or any date, and see the weeks of the year.
- Leap Year CalculatorCheck if any year is a leap year and see why, plus the next and previous leap years.
- Day of the Week CalculatorFind out what day of the week any date falls on, plus the ISO week number and day of the year.
- Zodiac Sign CalculatorFind your astrological star sign and Chinese zodiac animal from your date of birth.
- Working Days in a YearCount the total working days, weekends, and public holidays in any year for a country.
- Your Age on Other PlanetsSee how old you'd be on Mercury, Mars, Jupiter, and every other planet in the solar system.
- Life in WeeksVisualize your life as a grid of weeks — one dot for every week you've lived and have left — and download it as an A3 poster.
- Doomsday Weekday CalculatorFind the day of the week for any date using the Doomsday algorithm, with the steps shown.
- Hours CalculatorCalculate the hours and minutes between two times, with breaks and overnight shifts.
- Time Card CalculatorTotal a week of clock-in and clock-out times with breaks, overtime, decimal hours and gross pay.
- Time to Decimal CalculatorConvert hours and minutes to decimal hours for payroll, and back, with a minutes chart.
- Overtime CalculatorWork out overtime hours and time-and-a-half or double-time pay from your rate and hours.
- Day of the YearToday's day number, days left and the year as 365 dots, plus a Julian date (YYDDD) converter with a full chart.
- Days From TodayFind the date any number of days, weeks, months or years from today — or how long ago.
- Add or Subtract TimeAdd or subtract days, hours, and minutes from any date and time to find the result.
- Business Days CalculatorCount working days between two dates or add business days to a date, excluding weekends and holidays.
Countdowns
Keep an important date or deadline in view.
Timers & Stopwatch
Focus, cook, train, study, or simply start a timer.
- Countdown TimerSet a custom duration and count down to zero. Perfect for cooking, meetings, and focus.
- StopwatchMeasure elapsed time with precision and record laps. Great for workouts and races.
- Reaction Time TestClick when the box turns green to measure your reaction time in milliseconds.
- Visual TimerA classroom timer: a shrinking disk, an hourglass or draining water, a full-screen room glow and a bell at the end.
- Pomodoro Timer25-minute focus sessions with breaks, plus today's sessions, a 26-week focus heatmap and your streak.
- Interval TimerAlternate between work and rest periods automatically. Perfect for HIIT and Tabata.
- Study TimerStructured study sessions with focused blocks and timed breaks for optimal learning.
- Cooking TimerRun multiple simultaneous timers for complex recipes so nothing overcooks.
- Egg TimerSoft, jammy or hard-boiled — pick a doneness and egg size and the timer sets itself.
- Meditation TimerA peaceful timer for meditation and mindfulness with gentle start and end chimes.
- Box BreathingGuided 4-4-4-4 box breathing with an animated square, plus 4-7-8 and coherent breathing.
- Workout TimerTrack exercise and rest periods across rounds for circuits and strength training.
- Online Alarm ClockSet a free online alarm for any time. It rings with a sound and a desktop notification.
- Sleep CalculatorFind the best times to go to bed or wake up based on 90-minute sleep cycles.
- Online MetronomeA free online metronome with adjustable tempo (BPM), time signature, and accented beats.
- Tap TempoTap along to any song to find its tempo in beats per minute.
- Chess ClockA two-player chess clock with adjustable time controls and increment for board games.
Sun & Moon
Follow daylight, moon phases, seasons, and sky events.
- Sunrise & SunsetSunrise, sunset, all three twilights, golden hour and day length on a 24-hour sun dial, for any city or your location.
- Moon PhaseToday's moon phase, the exact time of the next full and new moon, and a month calendar of phases in your time zone.
- Seasons — Equinox & SolsticeExact dates and times of the equinoxes and solstices for any year, and the current season.
Holidays
Find public holidays and national observances worldwide.