Date & Time Tools
Free date and time tools — countdown timer, stopwatch, pomodoro timer, working days calculator, sleep cycle calculator and week numbers.
Countdown TimerFree online countdown timer — set minutes or a target date, get a huge live display, progress bar, and an audible alarm when time is up.StopwatchFree online stopwatch with lap times — big centisecond display, Start/Pause/Resume, and a lap table that highlights your best and slowest laps.Pomodoro TimerFree Pomodoro timer with 25/5 focus-break cycles, long breaks, auto-advance chime, session dots and customizable durations — right in your browser.Working Days CalculatorCount working days between two dates excluding weekends and holidays, or add N business days to a date — instant deadline and delivery estimates.Sleep CalculatorFind the best time to sleep or wake up based on 90-minute sleep cycles. Enter your wake-up time or sleep now — get ideal bedtimes and alarms.Week NumberWhat week is it? See the current ISO 8601 week number, find the week of any date, and get each week's Monday–Sunday range instantly.Days Until CalculatorCount exactly how many days until any date — New Year, Ramadan, Eid, Christmas or your own event — with weeks, months and a live countdown.Hours CalculatorFree time-sheet hours calculator — enter start time, end time and breaks for each day to get total hours in hh:mm and decimal, plus a weekly pay estimate.Time Duration CalculatorCalculate the exact duration between two dates and times — years, months, days, hours, minutes, seconds — and add or subtract durations from any date-time.Calendar GeneratorFree calendar generator — create printable monthly or yearly calendars with your week start and highlighted holidays, then download or copy them.Gregorian to Hijri ConverterConvert any Gregorian date to the Islamic Hijri calendar — Umm al-Qura or tabular methods, with a moon-sighting adjustment. Free and instant.Hijri to Gregorian ConverterConvert Islamic Hijri dates to Gregorian dates instantly — Umm al-Qura or tabular methods with a moon-sighting adjustment. Free, no signup.Meeting Time PlannerFind overlapping working hours across time zones — compare up to 6 cities on a color-coded grid and copy shareable meeting time options.Online MetronomeFree online metronome with 20-300 BPM, tap tempo, time signatures and an accented first beat — precise audio clicks right in your browser.Timesheet CalculatorFree weekly timesheet calculator — enter daily start, end and break times to get total, regular and overtime hours plus an optional pay estimate.Work Hours CalculatorCalculate daily paid work hours after breaks, plus weekly, monthly and yearly totals and an optional pay estimate. Free, instant, no signup.Moon Phase CalculatorSee the moon phase for any date — phase name, illumination percentage, moon age and a visual moon, plus the next full and new moon dates.Online Alarm ClockFree online alarm clock — set a time, label and sound, and your browser rings with a big live clock and countdown. No install or signup.World ClockLive world clock — current time in multiple cities at once with dates, UTC offsets, 12/24-hour formats and your own city list. Free, no signup.Overtime CalculatorCalculate overtime pay free — enter your rate, regular and overtime hours, pick 1.5x, 2x or a custom multiplier, and see the full pay breakdown.Ramadan CountdownFree Ramadan countdown — see the days, hours and minutes until the estimated start of Ramadan, with expected dates for upcoming years. No signup.Sunrise and Sunset CalculatorFree sunrise and sunset calculator — get sunrise, sunset and twilight times for any date and location using a standard solar algorithm. No signup.