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Time & date
Global timezone converterTimezone meeting plannerWorld clock & city directoryTimezone convertersTimezone overlap
Calendars
Leap year finderCountry calendarsHoliday explorerBusiness daysUS business daysDate differenceDay of yearWeek numbers
Calculators
Date calculatorAge calculatorBirthday calculatorDate differenceTime durationBusiness days
Developer
Date format converterUnix timestampEpoch to dateMillisecondsSeconds to msMicrosecondsCode snippetsLinux dateExcel timestampsDiscord Timestamp Generator
Timers
Online timerStopwatchCountdown timerHalloween countdownThanksgiving countdownNew Year countdown
Daylight savings
Daylight savings 2026Daylight savings 2027Daylight savings 2028Daylight savings 2029Daylight savings 2030
Time and date tools

Time and date tools for everyone.

Time and date tools for world clocks, timezone meeting plans, country holidays, Unix timestamps, date calculations, and everyday timing.

Find your next move

One place for
every plan.

From a quick city check to a careful calendar plan, choose a focused tool and get a clear answer in seconds.

Browse the toolkit
◎See every city at onceGlobal timezone planning✦Plan around public holidaysCountry calendars and dates+−Shape the date you needAdd, subtract, compare<>Make time useful in codeTimestamps and developer tools
The toolkit

Everything for
the time of day.

Pick a category, then open the exact tool you need. Every result is readable, copy-ready, and built to work on a small screen.

Global time

Know the time before you make the plan.

Compare cities, convert timezones, and find a meeting window that respects everyone’s local day.

Global timezone utilityAvailableGlobal Timezone ConverterCompare up to eight cities on a live timeline, find shared work hours, and share the plan.Open tool Timezone meeting planningAvailableTimezone Meeting PlannerFind the best shared work window across up to eight cities and share the plan.Open tool Global timeAvailableWorld Clock & City DirectorySearch live local times by city, browse city guides, and compare date changes.Open tool Timezone utilityAvailableTimezone ConverterCompare current times, dates, weekdays, and daylight-saving changes.Open tool Meeting planningAvailableTimezone OverlapFind the shared working window across cities and time zones.Open tool
Calendars & dates

Plan the date, not just the hour.

Explore leap years, country holidays, daylight-saving schedules, and practical date calculators for work, travel, birthdays, and everyday planning.

Calendar utilityAvailableLeap Year FinderCheck whether any year is a leap year and get a clear calendar answer.Open tool Holiday directoryAvailableHoliday ExplorerSearch public holidays, bank holidays, and observances by country and year.Open tool Calendar directoryAvailableCountry CalendarsBrowse 54 country calendars with monthly grids and holiday dates.Open tool Global timeAvailableDaylight Savings GuidesCompare clock-change dates across the US, Europe, Australia, New Zealand, and more.Open tool Date planningAvailableBusiness Days CalculatorCount working days while excluding weekends and optional country holidays.Open tool Date planningAvailableUS Business Days CalculatorCount US working days with weekends only or public holiday exclusion.Open tool Date planningAvailableDate Difference CalculatorCount calendar days, weeks, and weekdays between two dates.Open tool Date planningAvailableDate CalculatorAdd or subtract days, weeks, months, and years from any date.Open tool Date planningAvailableAge CalculatorCalculate exact age in years, months, days, total months, and total days.Open tool Date planningAvailableBirthday CalculatorFind your next birthday, days remaining, age, and total days lived.Open tool Calendar utilityAvailableDay of Year CalculatorFind the ordinal day, days remaining, and leap-year status.Open tool Calendar utilityAvailableWeek Number CalculatorConvert any date to ISO and US week numbers with date ranges.Open tool Duration mathAvailableTime Duration CalculatorFind hours between times, including overnight shifts and breaks.Open tool
Developer & timestamp tools

Make time data useful in code.

Convert dates and epochs, generate snippets, and move time data between terminals, spreadsheets, and apps.

Date conversionAvailableDate Format ConverterConvert dates between ISO, US, EU, written, Unix, and custom formats.Open tool Developer utilityAvailableUnix Timestamp ConverterConvert epoch time to local date, UTC, ISO 8601, or relative time.Open tool Date conversionAvailableEpoch to DateTurn Unix seconds, milliseconds, or hex into a readable date.Open tool Unit converterAvailableMilliseconds ConverterConvert milliseconds to seconds, minutes, hours, and duration.Open tool Unit converterAvailableSeconds to MillisecondsConvert seconds to milliseconds, microseconds, and nanoseconds.Open tool Precision timingAvailableMicroseconds ConverterTranslate microseconds into seconds, milliseconds, and nanoseconds.Open tool Developer utilityAvailableCode SnippetsCopy Unix timestamp examples for Python, JavaScript, Go, SQL, and more.Open tool Terminal referenceAvailableLinux Date CommandsCreate and convert timestamps with Linux GNU date or macOS BSD date.Open tool Spreadsheet utilityAvailableExcel Timestamp ConverterUse formulas to convert Unix time in Excel and Google Sheets.Open tool Community planningAvailableDiscord Timestamp GeneratorCreate timezone-aware Discord timestamps that look right for everyone.Open tool Learn the basicsAvailableWhat Is the Unix Epoch?Understand epoch time, POSIX time, UTC, and the 1970 starting point.Open tool
Timers & countdowns

Keep the moment moving.

Run focused timers, measure elapsed time, and count down to the next important date.

Live timerAvailableOnline TimerRun multiple named timers for focus, workouts, classes, cooking, and more.Open tool Live timerAvailableOnline StopwatchMeasure elapsed time with split laps, keyboard shortcuts, copy, and export.Open tool Live timerAvailableCountdown TimerCount down to a date and time with a clear, shareable display.Open tool Holiday countdownAvailableHalloween CountdownSee the live time remaining until the next October 31.Open tool Holiday countdownAvailableThanksgiving CountdownCount down to the next US Thanksgiving in local time.Open tool Holiday countdownAvailableNew Year CountdownWatch the time remaining until the next January 1.Open tool
About GeoTimeTools

Time is easier when
the math disappears.

GeoTimeTools is a focused collection of browser-only time and date tools. Compare world clocks, plan meetings across cities, search country holidays, check leap years and daylight-saving dates, convert date formats and epoch values, calculate ages, birthdays, dates, and durations, run timers, build terminal commands, grab spreadsheet formulas, or use the Discord Timestamp Generator without wrestling with a cluttered interface.

33 focused tools54 holiday countries0 accounts required
Helpful answers

Frequently
asked.

What is a Unix timestamp?

A Unix timestamp is the number of seconds elapsed since 1970-01-01 00:00:00 UTC. Some systems use milliseconds instead, which is why the converter detects common units.

Which GeoTimeTools tool should I use?

Use the Unix Timestamp Converter for general date conversion, the unit converters for ms or μs math, Code Snippets for programming examples, Linux Date for terminal commands, and Excel for spreadsheet formulas.

Are these timestamp tools free?

Yes. The tools run in your browser, require no sign-up, and are designed for quick copy-and-paste results.

Can I create Discord timestamps here?

Yes. The Discord Timestamp Generator creates every Discord display format and automatically detects your timezone.

Annual planning

One extra day.
One less surprise.

Check leap years, understand February 29, and use the answer when planning dates, birthdays, schedules, and recurring reminders.

Open Leap Year Finder
29Leap Year FinderClear answers for any yearCheck a year ▦Country CalendarsMonthly views and holidaysBrowse calendars ↻Daylight SavingsClock-change planning guidesRead the guide
More from GeoTimeTools

Helpful details,
clearly explained.

Get to know the project, understand how privacy works, review the site terms, or send a question directly.

About usLearn why GeoTimeTools exists and how the tools are designed.Open page Privacy policySee what stays in your browser and how privacy is handled.Open page Terms & conditionsRead the straightforward rules for using the site.Open page Contact usFind the best way to share feedback, corrections, or questions.Open page