📅Date & Time
Free date and time tools: age calculator, date difference, countdowns, business days and time zones. Accurate to the day.
🎂 Age Calculator Free age calculator. Enter your date of birth to find your exact age in years, months and days, plus total weeks, days and your next birthday. 📆 Add or Subtract Days Calculator Free date calculator: add or subtract days, weeks, months, or years from any date. See the resulting date and its weekday instantly, with no time-zone drift. ⏱️ Add Time Calculator Free add time calculator. Add or subtract hours, minutes and seconds to a start time and see the result with day rollover, or sum two durations together. 👥 Age Gap Calculator Free age gap calculator: enter two birth dates to find the exact age difference in years, months and days, plus the total days between the two people. 👶 Age in Months Calculator Free age in months calculator. Enter a date of birth to see how many months old someone is, plus the remaining days, total weeks and total days exactly. 💎 Birthstone Finder Free birthstone finder: enter your birth month or date to see the modern and traditional birthstone for that month, plus its color and a short meaning. 📅 Business Days Calculator Free business days calculator: count working days (Mon to Fri) between two dates, excluding weekends. See total days, business days, weekends, and full weeks. 🐉 Chinese Zodiac Calculator Free Chinese zodiac calculator: enter any birth year to find your animal sign, its emoji, the five-element cycle, and the Chinese New Year boundary note. ⏳ Countdown Timer Free live countdown timer to any date and time. Enter a target moment and watch the days, hours, minutes and seconds tick down in real time until your event. 📅 Date Difference Calculator Free date difference calculator: find the number of days between two dates, plus the gap in years, months, and days and the total weeks. Works in any order. 📅 Date Format Converter Free date format converter: enter any date and instantly convert it to ISO 8601, US, European, long, Unix timestamp and weekday formats, ready to copy. 🗓️ Date Sequence Generator Free date sequence generator: build a list of recurring dates from a start date stepping by N days, weeks, months or years, up to an end date or count. 🗓️ Date to Words Converter Free date to words converter: enter any date to write it in words like the nineteenth of June, two thousand twenty-six, plus American style and ordinal day. 📅 Day of the Week Calculator Free day of week calculator: enter any past or future date to find the weekday, plus the day of the year and the ISO week number. See what day you were born. 📆 Day of Year Calculator Free day of year calculator: enter any date or use today to find the ordinal day number (1-366), the days remaining in the year, and the percent elapsed. 📅 Days in Month Calculator Free days in month calculator: pick any month and year to see how many days it has, learn why February has 28 or 29 days, and view a full 12-month table. 📆 Days Since Calculator Free days since calculator: enter any past date to find out how many days have passed since then, plus the total in weeks, months and years up to today. 📅 Days Until Calculator Free days until calculator: pick any date to see how many days until it (or how many days ago it was), plus the count in weeks and the weekday it falls on. 🐰 Easter Date Calculator Find the date of Easter Sunday for any year with this free Easter date calculator using the Gregorian Computus algorithm, plus the dates for surrounding years. 👥 Generation Calculator Free generation calculator: enter your birth year to find out if you are Gen Z, a Millennial, Gen X, a Boomer, or another cohort, with full year ranges. 📅 Leap Year Checker Free leap year checker: enter any year to instantly see whether it is a leap year, why the rule applies, how many days February has, and the next leap years. 🗓️ Meeting Time Planner Free meeting time zone planner. Enter a meeting time in your zone and add participant zones to see everyone's local time, so you can pick a slot that works. 🌙 Moon Phase Calculator Free moon phase calculator: enter any date to see the lunar phase, percent illumination and the Moon age in days, with an emoji and the eight named phases. 📅 Nth Weekday Calculator Free nth weekday calculator. Find the date of any nth weekday in a month, like the 3rd Monday or last Friday, and see when the 5th occurrence does not exist. 🍅 Pomodoro Timer Free Pomodoro timer online. Set work, short break and long break lengths, auto-cycle through sessions, and stay focused with this 25 minute focus timer. 📅 Quarter of the Year Calculator Find which quarter a date falls in. See the calendar quarter (Q1 to Q4), its months, start and end dates, days remaining, and optional fiscal quarter instantly. 🏖️ Retirement Date Calculator Free retirement date calculator: enter your date of birth and target retirement age to see your exact retirement date, your current age, and a live countdown. 🏛️ Roman Numeral Date Converter Free Roman numeral date converter. Turn any date into Roman numerals in formats like DD.MM.YYYY (19.VI.MMXXVI). Perfect for tattoos, rings and engravings. Copy. ⏱️ Seconds to HH:MM:SS Converter Free seconds to HH:MM:SS converter that works both ways: turn any number of seconds into hours, minutes and seconds (plus days and decimal hours), or reverse. ⏱️ Online Stopwatch Free online stopwatch with start, stop, lap, and reset. Measure elapsed time in minutes, seconds, and hundredths, and record lap splits right in your browser. 🌅 Sunrise Sunset Calculator Free sunrise and sunset calculator. Enter latitude, longitude, date and UTC offset to get approximate sunrise time, sunset time and total daylight hours. ⏳ Time Ago Calculator Free time ago calculator: enter any past date and time to see how long ago it was in years, months and days, plus the exact total days and hours since then. ⏱️ Time Duration Calculator Free time duration calculator: find hours and minutes between two times, plus decimal hours. Accepts 12-hour AM/PM or 24-hour input, handles overnight shifts. 🕒 Time to Decimal Converter Convert time to decimal hours and back. Turn hours and minutes into decimal hours for timesheets and payroll, or decimal hours back into HH:MM, instantly. 🌐 Time Zone Converter Free time zone converter: convert any time between world zones like New York, London, Tokyo, and Dhaka. Enter a date and time, pick zones, get the answer. 📅 Week Number Calculator Free ISO 8601 week number calculator. Enter any date or use today to find the exact ISO week number, the ISO week-numbering year, and the weekday in one click. 📆 Week of the Month Calculator Free week of the month calculator: enter any date and instantly see which week of the month it falls in, plus that week date range. Pick Sunday or Monday. 📅 Weeks Between Dates Free weeks between dates calculator: enter two dates to see the number of weeks and leftover days between them, plus the total weeks and total days at once. 🎉 Work Anniversary Calculator Free work anniversary calculator: enter your start date to get years of service in years, months and days, total days, and a countdown to your next anniversary. ⏱️ Work Hours Calculator Free work hours calculator and timesheet tool. Enter clock-in, clock-out and break times to get hours worked as hh:mm and decimal, weekly totals and gross pay. ♈ Zodiac Sign Calculator Free zodiac sign calculator. Enter your birth date to find your Western star sign instantly, with its symbol, element, ruling planet and exact date range.
Working with dates by hand is fiddly: leap years, uneven month lengths and time zones all trip up a quick subtraction. Our date and time tools handle the calendar maths precisely, so you get the exact answer down to the day.
From finding an exact age to counting down to a deadline, everything runs locally in your browser.