Time and Date

  • Days Until Baby Is Born Calculator
    Count down the days until your baby's due date. Enter the estimated due date and today's date to see days, weeks, and months remaining.
  • Days Lived Calculator
    Find out exactly how many days you have lived. Enter your date of birth and an end date to count the total days, weeks, hours and years between them.
  • Clock Angle Calculator
    Calculate the angle between the hour and minute hands of a clock at any time using the formula |30H − 5.5M|. Instant, accurate, with reflex angle.
  • Add Days to Date Calculator
    Add or subtract any number of days from a start date to find the exact future or past date, including the day of the week. Free online date calculator.
  • Add or Subtract Hours from a Time Calculator
    Add or subtract hours from any start time and get the resulting clock time. Wraps correctly past midnight using a 24-hour, mod-1440 calculation.
  • Current Unix Timestamp Calculator
    Convert milliseconds to a Unix timestamp (epoch seconds). Get the current epoch now plus minutes, hours, and days since Jan 1, 1970 UTC.
  • Milestone Birthday Date Calculator
    Find the exact date and weekday of any milestone birthday — 16th, 18th, 21st, 30th, 40th, 50th and more — from a date of birth.
  • Relationship Length Calculator
    Find out exactly how long you've been together. Enter your relationship start date to get years, months, days, total weeks and total days.
  • Shift Length Calculator
    Calculate how many hours you worked in a shift from start and end times minus your unpaid break. Handles overnight shifts that cross midnight.
  • Gestational Age from Ultrasound Calculator
    Calculate estimated due date (EDD) and current gestational age from an ultrasound scan date and the gestational age measured at that scan.
  • Arrival Local Time Across Time Zones Calculator
    Calculate your arrival local time after a flight across time zones. Enter departure time, flight duration and UTC offsets to get destination local time and day offset.
  • Calendar Days vs Business Days Calculator
    Count business days (workdays) between two dates. Subtracts weekends and optional public holidays from total calendar days. Free workday calculator.
  • Age Difference Between Two People Calculator
    Find the exact age gap between two people in years, months and days. Enter both birthdays to get the precise difference and total days apart.
  • Dog Pregnancy Due Date Calculator
    Estimate your dog's whelping (due) date from the breeding date. Canine gestation averages 63 days, with a normal range of 58–68 days.
  • What Time Was It X Hours Ago?
    Find out what time it was a given number of hours ago. Enter the current time and hours to subtract — get the past clock time and how many days back it rolls.
  • 90 Day Calculator
    Add 90 days (or any number of days) to any date instantly. Find the exact future date and day of the week, with calendar leap-year handling.
  • Days Until Super Bowl Calculator
    Count down the days until the next Super Bowl (US), held the second Sunday in February. Enter any date and get the exact days remaining.
  • Epoch Milliseconds to Date Converter
    Convert a Unix epoch timestamp in milliseconds to a human-readable UTC date and time (ISO 8601), with year, month, day, hour, minute and second breakdown.
  • What Time Will It Be in X Hours?
    Find out what time it will be in X hours from any start time. Enter a start time and number of hours to get the result in 24-hour HH:MM format.
  • EST to UTC Converter
    Convert Eastern Standard Time (EST) to Coordinated Universal Time (UTC) instantly. EST is UTC−5, so UTC = EST + 5 hours (mod 24).
  • PST to UTC Converter
    Convert Pacific Standard Time (PST) to Coordinated Universal Time (UTC). Enter an hour and minute to instantly add the +8 hour offset.
  • EDT to PDT Converter
    Convert Eastern Daylight Time (EDT) to Pacific Daylight Time (PDT) instantly. PDT = EDT − 3 hours. Enter any hour and minute to get the exact PDT time.
  • IST to UTC Converter
    Convert Indian Standard Time (IST) to Coordinated Universal Time (UTC). IST is UTC+5:30, so subtract 5 hours 30 minutes to get the UTC time instantly.
  • 24-Hour to 12-Hour Time Converter
    Convert military 24-hour time to standard 12-hour AM/PM format instantly. Enter the hour and minute to see the equivalent clock time.

Categories