Time & Date Toolkit
The precise way to work with time
A professional suite of free calculators for age, durations, countdowns, business days and time-zone overlap — accurate to the second, built to be fast on every device.
110K+Monthly users
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Free time & date calculators that actually add up
This hub brings together more than 75 time and date tools in one place. Whether you need your exact age in years, months and days, the number of business days before a deadline, the hours between two times, or a live countdown to a holiday, each calculator accounts for leap years, varying month lengths and daylight-saving shifts so the answer is correct the first time.
Everything is free, requires no account, and is built mobile-first. Use the search box above to jump straight to a tool, or filter by category — countdowns, conversions, date maths, quick answers and time-zone scheduling.
Countdown Calculators
Count down to the dates that matter — birthdays, holidays, weddings and deadlines.
38 toolsBirthday CountdownCount down to your birthdayCountdown TimerSet custom countdown timersDays Until CalculatorCalculate days until any dateEnd of School CountdownCount down to the year endStart of School CountdownCount down to the new termStopwatchPrecision stopwatch timerTime Until CalculatorCalculate time until an eventTimerSet flexible countdown timersWedding CountdownCount down to your big dayDays Until ChristmasChristmas countdownDays Until EasterEaster countdownDays Until HalloweenHalloween countdownDays Until July 4thIndependence Day countdownDays Until New Year'sNew Year countdownDays Until ThanksgivingThanksgiving countdownDays Until NovemberCount the days to NovemberDays Until DecemberCount the days to DecemberDays Until JanuaryCount the days to JanuaryDays Until Valentine's DayValentine's countdownDays Until Black FridayBlack Friday countdownDays Until Cyber MondayCyber Monday countdownDays Until DiwaliDiwali countdownDays Until HoliHoli festival countdownDays Until EidEid countdownDays Until RamadanRamadan countdownDays Until BirthdayBirthday countdownDays Until VacationVacation countdownDays Until RetirementRetirement countdownDays Until NavratriNavratri countdownDays Until OnamOnam festival countdownDays Until Ganesh ChaturthiGanesh Chaturthi countdownDays Until Lunar New YearLunar New Year countdownDays Until Chinese New YearChinese New Year countdownDays Until SongkranSongkran festival countdownRetirement CountdownCount down to retirementExam CountdownCount down to exam daySummer Break CountdownCount down to summerGraduation CountdownCount down to graduation
Time Conversion Calculators
Translate cleanly between formats and units — decimal, military, seconds and more.
10 tools24 Hour to 12 HourConvert 24-hour to 12-hour timeDecimal Hours to HH:MM:SSConvert decimal to time formatMilitary Time ConverterConvert to and from military timeMinutes to HH:MM:SSConvert minutes to clock timeSeconds to HH:MM:SSConvert seconds to clock timeTime to DecimalConvert time to decimal hoursTime to HoursConvert time to total hoursTime to MinutesConvert time to total minutesTime to SecondsConvert time to total secondsTime Unit ConversionsConvert across any time units
Time & Date Calculators
Add, subtract and measure — the everyday workhorses for dates, durations and differences.
70 toolsAdd Days CalculatorAdd days to any dateAdd Hours CalculatorAdd hours to a timeAdd Minutes CalculatorAdd minutes to a timeAdd Time CalculatorAdd time durations togetherAge CalculatorCalculate your exact ageAge Difference CalculatorCompare two ages preciselyAverage Time CalculatorAverage a set of timesBusiness Day CalculatorCount working days, skip weekendsDate CalculatorAdd or subtract from a dateDate Range CalculatorMeasure a span of datesDay CounterCount days between two datesDay of the WeekFind the weekday for any dateDays From TodayDate a number of days aheadDays Since DateDays elapsed since a past dateDownload Time CalculatorEstimate download durationHours CalculatorHours between two timesHow Old Was IYour age on a past dateMonths From TodayDate a number of months aheadSubtract TimesSubtract time durationsTime CalculatorAdd and subtract time valuesTime Card CalculatorTrack and total work hoursTime Duration CalculatorMeasure a duration preciselyWeeks Between DatesCount weeks across a rangeWeeks CalculatorWork with weeks and datesWeeks From TodayDate a number of weeks aheadWork Time CalculatorCalculate paid working hoursYears Ago CalculatorDate a number of years backYears Between DatesCount years across a rangeMonths Between DatesCount months across a rangeHours Between DatesCount hours across a rangeMinutes Between DatesCount minutes across a rangeSeconds Between DatesCount seconds across a rangeBusiness Hours BetweenWorking hours in a rangeWeekdays Between DatesCount only weekdaysWeekend Days BetweenCount only weekend daysBusiness Days BetweenWorking days between datesWorkdays From TodayWorking days from nowDownload Speed CalculatorCalculate download speedUpload Time CalculatorEstimate upload durationRender Time CalculatorEstimate render durationFile Transfer TimeEstimate file transfer timeInternet Speed TimeCalculate based on speedDate Pattern FinderFind patterns in datesPalindrome Date FinderFind palindrome datesFriday the 13thFind Friday the 13th datesLeap Year CalculatorCheck for leap yearsIs It a Leap YearCheck if a year is a leap yearDoomsday CalculatorCalculate doomsday algorithmHow Many Days in a YearDays in any yearHow Many Weeks in a YearWeeks in any yearHow Many Days in FebruaryDays in FebruaryIs 2028 a Leap YearCheck if 2028 is a leap yearHow Many Fridays in 2026Count Fridays in 2026Date 100 Days From Today100 days from nowDate 180 Days From Today180 days from nowDate 365 Days From Today1 year from nowDate 1 Year From Today1 year from nowDate 2 Years From Today2 years from nowDate 1000 Days From Today1000 days from now100 Days AgoDate 100 days ago30 Days AgoDate 30 days ago90 Days AgoDate 90 days ago6 Months AgoDate 6 months ago1 Year AgoDate 1 year ago7 Days AgoDate 7 days ago14 Days AgoDate 14 days ago21 Days AgoDate 21 days ago60 Days AgoDate 60 days ago180 Days AgoDate 180 days ago365 Days AgoDate 365 days ago
Knowledge Base
Instant lookups and ready-made reference points — calendars, clocks and "what date is…" answers.
56 tools2025 CalendarView the full 2025 calendar2026 CalendarView the full 2026 calendar2027 CalendarView the full 2027 calendar2028 CalendarView the full 2028 calendar2029 CalendarView the full 2029 calendar2030 CalendarView the full 2030 calendarPrintable CalendarDownload printable calendarsMonth CalendarView any month calendarYear CalendarView any full year calendarHoliday CalendarCalendar with holidays markedAnalog ClockA live analog clockDigital ClockA live digital clockDays Left in 2025How many days remainWeeks Left in 2025How many weeks remainWhat Day of the YearFind the day numberWhat Is Today's DateSee today's dateWhat Week of the YearFind the week numberDate 14 Days From Today2 weeks from nowDate 21 Days From Today3 weeks from nowDate 28 Days From Today4 weeks from nowDate 30 Days From Today1 month from nowDate 45 Days From Today45 days from nowDate 60 Days From Today2 months from nowDate 90 Days From Today3 months from nowDate 120 Days From Today4 months from nowDate 4 Weeks From Today4 weeks from nowDate 6 Weeks From Today6 weeks from nowDate 8 Weeks From Today8 weeks from nowDate 10 Weeks From Today10 weeks from nowDate 12 Weeks From Today12 weeks from nowDate 16 Weeks From Today16 weeks from nowDate 20 Weeks From Today20 weeks from nowDate 52 Weeks From Today1 year from nowDate 2 Months From Today2 months from nowDate 3 Months From Today3 months from nowDate 4 Months From Today4 months from nowDate 5 Months From Today5 months from nowDate 6 Months From Today6 months from nowDate 9 Months From Today9 months from nowDate 12 Months From Today1 year from nowDate 18 Months From Today1.5 years from nowTime 8 Hours From Now8 hours from nowTime 10 Hours From Now10 hours from nowTime 12 Hours From Now12 hours from nowTime 16 Hours From Now16 hours from nowTime 18 Hours From Now18 hours from nowTime 20 Hours From Now20 hours from nowTime 72 Hours From Now3 days from nowTime 5 Minutes From Now5 minutes from nowTime 10 Minutes From Now10 minutes from nowTime 15 Minutes From Now15 minutes from nowTime 20 Minutes From Now20 minutes from nowTime 25 Minutes From Now25 minutes from nowTime 30 Minutes From Now30 minutes from nowCurrent TimeSee the current time nowWhat Day Was I BornFind your birth weekday
World Time & Timezone Converters
Convert across timezones, plan meetings and coordinate globally with precision.
49 toolsTimezone Overlap FinderFind overlapping business hoursTime Zone ConverterConvert between any timezonesWorld ClockSee time across the worldTime DifferenceCalculate timezone differencesMeeting PlannerFind best meeting timesUTC ConverterConvert to and from UTCGMT ConverterConvert to and from GMTEpoch ConverterConvert Unix epoch timestampsUnix Timestamp ConverterWork with Unix timestampsTimezone DurationDuration across timezonesTimezone MapVisual timezone referencePST to IST ConverterConvert PST to ISTEST to IST ConverterConvert EST to ISTGMT to IST ConverterConvert GMT to ISTUTC to IST ConverterConvert UTC to ISTCST to EST ConverterConvert CST to ESTIST to PST ConverterConvert IST to PSTIST to EST ConverterConvert IST to EST9AM PST to ISTConvert 9AM PST to IST10AM EST to ISTConvert 10AM EST to IST12PM GMT to ISTConvert 12PM GMT to IST5PM IST to ESTConvert 5PM IST to EST8AM CST to PSTConvert 8AM CST to PST1PM PST to ISTConvert 1PM PST to IST2PM PST to ISTConvert 2PM PST to IST3PM PST to ISTConvert 3PM PST to ISTBest Time to Call IndiaOptimal calling hoursUS-India Time DifferenceTime gap between US and IndiaIndia-USA Meeting PlannerSchedule US-India meetingsIndia-UK Time ConverterConvert India to UK timeIndia-Canada Time ConverterConvert India to Canada timeCST to IST ConverterConvert CST to ISTMST to IST ConverterConvert MST to ISTEDT to IST ConverterConvert EDT to ISTBST to IST ConverterConvert BST to ISTCET to IST ConverterConvert CET to ISTCEST to IST ConverterConvert CEST to ISTUTC to EST ConverterConvert UTC to ESTUTC to PST ConverterConvert UTC to PSTUTC to GMT ConverterConvert UTC to GMTSGT to IST ConverterConvert SGT to ISTJST to IST ConverterConvert JST to ISTAEST to IST ConverterConvert AEST to IST4PM PST to ISTConvert 4PM PST to IST6AM EST to ISTConvert 6AM EST to IST11PM GMT to ISTConvert 11PM GMT to IST5AM PST to ISTConvert 5AM PST to IST6AM PST to ISTConvert 6AM PST to IST7AM PST to ISTConvert 7AM PST to IST
Business Hours & Payroll Calculators
Track shifts, calculate overtime, manage timesheets and streamline payroll operations.
14 toolsWork Hours CalculatorCalculate daily work hoursPayroll Hours CalculatorCompute payroll hoursOvertime CalculatorCalculate overtime payTimesheet CalculatorTotal weekly timesheetsShift CalculatorPlan work shiftsLunch Break CalculatorDeduct break timeEmployee Hours TrackerTrack employee work hoursWork ScheduleBuild work schedulesSalary to HourlyConvert salary to hourly rateHourly to SalaryConvert hourly to salaryPTO CalculatorCalculate paid time offVacation Hours CalculatorTrack vacation balanceBillable Hours CalculatorTrack billable timeFreelance Hours CalculatorCalculate freelance earnings
Age & Birthday Calculators
Explore age in every unit, discover zodiac signs and celebrate milestones.
11 toolsAge in DaysYour age measured in daysAge in HoursYour age measured in hoursAge in MinutesYour age measured in minutesAge in SecondsYour age measured in secondsNext Birthday CalculatorDays until next birthdayHalf Birthday CalculatorFind your half birthdayZodiac Sign CalculatorDiscover your zodiac signChinese Zodiac CalculatorFind your Chinese zodiacBirthday WeekdayWhat day is your birthdayCelebrity Age ComparisonCompare age with celebritiesSpecial Age CalculatorMilestone age tracker
School & Academic Calculators
Semesters, study timers, exam countdowns and everything academic.
4 toolsProductivity & Wellness Timers
Stay in the zone with focus timers, interval training and meditation aids.
7 toolsLife Events & Pregnancy Calculators
Track pregnancy milestones, plan due dates and celebrate life moments.
6 toolsLife Progress & Trackers
Visualize your journey through time — from billion seconds to retirement.
9 toolsLife Progress BarVisualize your life progressYear Progress BarHow much of the year is leftMonth Progress BarHow much of the month is leftWeek Progress BarHow much of the week is leftDay Progress BarHow much of today is leftTime Lived CalculatorTotal time you've been aliveBillion SecondsWhen will you be 1B seconds oldDeath ClockLife expectancy estimateLife Timeline VisualizerInteractive life timeline
Timestamp & Daylight Saving Tools
Handle Unix timestamps, ISO dates, cron expressions and DST transitions.
10 toolsDaylight Saving TimeDST informationDST ConverterConvert during DST changesDST Start DateWhen does DST beginDST End DateWhen does DST endTimestamp to DateConvert Unix timestampDate to TimestampConvert date to Unix timestampISO Date ConverterConvert ISO 8601 datesRFC 3339 ConverterConvert RFC 3339 timestampsCron ParserParse cron expressionsCron GeneratorGenerate cron expressions
Astronomical & Nature Calculators
Track moon phases, sunrise times, seasons and celestial events.
9 toolsMoon Phase CalculatorCurrent moon phaseSunrise & Sunset TimesFind sunrise and sunsetSeasons CalculatorFind season datesGolden Hour CalculatorPhotography golden hourBlue Hour CalculatorPhotography blue hourSolar Noon CalculatorWhen the sun is highestEclipse CalendarUpcoming eclipsesPlanet VisibilitySee visible planetsPrayer Times CalculatorIslamic prayer times
AI-Powered & Smart Tools
Next-gen tools with intelligent scheduling, visual planners and smart recommendations.
7 toolsAI Meeting PlannerSmart meeting schedulerBest Focus HoursFind your peak productivityJet Lag PlannerPlan jet lag recoveryRemote Team SchedulerSchedule across timezonesVisual Timezone OverlapGraphical overlap viewDrag & Drop Meeting PlannerVisual meeting plannerCalendar HeatmapsVisual activity heatmaps
Time Zone Tools
Find the perfect meeting time across the world, on one visual timeline.
What Our Users Say
4.9
Based on 6,548 reviews
“The business-day calculator is essential for planning. Accurate deadline maths saves me hours every single week.”
M
Michael Stevens
Project Manager
October 2, 2024
“I use the age calculator daily for employee records. Fast, accurate, and it handles leap years flawlessly.”
R
Rachel Kim
HR Coordinator
September 19, 2024
“The countdowns keep all my event deadlines in view. The real-time updates and clean interface are unbeatable.”
D
David Martinez
Event Planner
October 14, 2024
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