Time and Date

  • Daylight Remaining for Hike Calculator
    Find out how much daylight is left before sunset and whether you'll finish your hike before dark. Compare daylight to your estimated hike time instantly.
  • Layover / Connection Time Calculator
    Calculate your flight layover or connection time in minutes between arrival and next departure, and check if it beats the minimum connection time.
  • Jet Lag Recovery Time Calculator
    Estimate how many days you need to recover from jet lag based on time zones crossed and travel direction (eastward vs westward).
  • Flight Arrival Local Time Calculator
    Calculate your flight's local arrival time across time zones. Enter departure time, flight duration, and origin/destination UTC offsets to get arrival time.
  • Army Leave Days Accrual Calculator (US)
    Estimate US Army leave accrual at 2.5 days per month, factoring in your starting balance and leave used, with the 60-day carryover cap applied.
  • Time Zone Difference Calculator
    Find the hour difference between two time zones. Enter each city's UTC offset to see how many hours apart they are, plus the signed direction.
  • Days Until Calculator
    Count the days until any future date, or days since a past date. Free countdown calculator showing days and weeks remaining to your target.
  • Hours Worked Calculator
    Free hours worked calculator. Enter clock in and clock out times plus break minutes to get total hours worked in decimal and hours-and-minutes format.
  • Day of the Week Calculator
    Find out what day of the week any date falls on using Zeller's congruence. Enter year, month and day to get the weekday instantly.
  • Chronological Age Calculator
    Calculate exact chronological age in years, months and days between a birthdate and any as-of date, plus total months, weeks and days.
  • School Starting Age Calculator
    Find out how old a child will be on the school cutoff date and whether they meet the minimum starting age. Enter birth date, cutoff date, and required age.
  • Hours Until a Given Time Calculator
    Find how many hours and minutes remain until a given time of day. Enter the current time and target time to get the countdown on a 24-hour cycle.
  • CST to UTC Converter
    Convert Central Standard Time (CST, UTC−6) to Coordinated Universal Time (UTC). Enter any CST hour and minute to get the exact UTC time instantly.
  • When Will I Turn 21 Calculator (US)
    Find the exact date you turn 21 and reach the legal US drinking age. Enter your birthday to see the date and days remaining until you can legally drink.
  • Pregnancy Weeks to Months Calculator
    Convert weeks pregnant to months instantly. Enter your gestational age in weeks to see how many months pregnant you are, using 4.34524 weeks per month.
  • Nth Weekday of the Month Calculator
    Find the date of the 1st, 2nd, 3rd, 4th or 5th specific weekday (e.g. 3rd Monday) of any month and year, with day-of-month and validity check.
  • Next Occurrence of a Weekday Calculator
    Find the next date that falls on a chosen weekday (e.g. the next Monday) from any start date, plus how many days ahead it is. Free and instant.
  • Working Hours Between Two Times Calculator
    Calculate net working hours between a start and end time, deducting break minutes. Supports overnight shifts and shows hours and minutes.
  • Days Until Easter Calculator
    Count down to Easter Sunday. Find the exact Western (Gregorian) Easter date for any year via the Computus and the number of days until it.
  • Generation Calculator by Birth Year
    Find your generation by birth year — Baby Boomer, Gen X, Millennial, Gen Z or Gen Alpha — using the widely cited Pew Research cohort ranges.
  • Zodiac Sign by Birthdate Calculator
    Find your zodiac (sun) sign instantly from your birth month and day. Maps your birthdate to the 12 astrological signs with element and date range.
  • Chinese Zodiac Sign Calculator
    Find your Chinese zodiac animal by birth year. Enter a year to get your sign (Rat, Ox, Tiger…) plus its fixed five-element association.
  • Countdown to Payday Calculator
    Find out how many days and weeks until your next payday. Enter your pay day of the month and today's date to count down to getting paid.
  • Weekly Hours Worked Calculator
    Add up your weekly work hours from daily clock-in and clock-out times, minus unpaid breaks. See total hours, daily average, and overtime over 40h.

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