Date & Time
Date & Time Tools
Free date and time tools for timestamps, time zones, durations, and scheduling.
Showing 24 of 66 tools.
Age Calculator
Exact age, day of birth, next birthday countdown, and lifetime stats.
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Date & TimePomodoro Timer
Configurable Pomodoro focus timer with breaks, cycles, and keyboard shortcuts.
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Date & TimeDays in Month Calculator
See how many days a month has, plus every month's length for a chosen year.
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Date & TimeDay of Year Calculator
Convert any date to its day-of-year number, and a day number back to a calendar date.
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Date & TimeGeneration Calculator
Enter a birth year to see your generation, its birth-year range, and a full generations chart.
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Date & TimeTime From Now Calculator
Find what time it will be after adding or subtracting hours and minutes.
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Date & TimeTime Unit Converter
Convert one time value into every unit at once, or do a precise unit to unit conversion.
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Date & TimeChrome / WebKit Timestamp Converter
Bidirectional converter for Chromium microseconds-since-1601 and WebKit NSDate seconds-since-2001 timestamps.
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Date & TimeHijri Date Converter
Convert dates between Gregorian and the Hijri (Islamic) calendar.
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Date & TimeISO Week Number Calculator
Convert dates to ISO week numbers, weeks back to dates, and see today's week at a glance.
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Date & TimeAge Difference Calculator
Exact gap between two birthdays, ages on any date, and the date the younger person reaches the older's age.
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Date & TimeDate Range Overlap Calculator
Detect overlaps, gaps, and the shared slice across up to ten date ranges.
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Date & TimeOnline Alarm Clock
Set a wall-clock alarm with a chosen tone, volume, label, and snooze.
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Date & TimeZodiac Sign Calculator
Western Sun sign and Chinese animal from any birth date, with element, ruling planet, birthstone, and compatibility.
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Date & TimePlaylist Duration Calculator
Add up the runtime of a playlist of songs, videos, or episodes.
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Date & TimeBulk Unix Timestamp Converter
Convert a whole list of epoch timestamps to dates in one pass.
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Date & TimeSlack Timestamp Formatter
Build Slack <!date^TS^TOKEN|FALLBACK> placeholders with live, zone-aware previews.
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Date & TimeTime Zone Abbreviations
Searchable time zone abbreviation cheat sheet with offsets, DST companions, and a live IANA clock.
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Date & TimeChess Clock
Two-player game clock with Fischer, Bronstein, and simple delay modes and standard chess presets.
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Date & TimeUS Federal Holidays
All US federal holidays for any year with calendar and observed dates plus .ics download.
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Date & TimeYear Progress Bar
Live year progress in percent, with copyable block bars for year, quarter, month, week, and day.
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Date & TimeYearly Calendar Generator
Printable 12-month calendar for any year with locales, ISO weeks, and date highlights.
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Date & TimeBox Breathing Timer
Animated breathing guide with box 4-4-4-4, 4-7-8, and coherent presets.
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Date & TimeClick Speed Test
Timed CPS test with live count, peak 1 second window, and per-second breakdown.
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