Time and Date

  • Age of Majority Date Calculator
    Find the exact date you reach the age of majority. Enter a birthdate and choose 18 or 21 years to see the calendar date and days remaining.
  • Dog Age in Dog Years by Breed Size Calculator
    Convert your dog's age to human years by breed size. Small, medium, and large dogs age differently — get a more accurate dog-years estimate instantly.
  • CST to IST Time Converter
    Convert Central Standard Time (CST/CDT) to India Standard Time (IST). CST is +11:30 ahead of IST, CDT is +10:30. Get instant accurate results.
  • MST to EST Time Converter
    Convert Mountain Standard Time (MST) to Eastern Standard Time (EST) instantly. EST is always 2 hours ahead of MST. Enter any MST time to get EST.
  • EST to CET Time Converter
    Convert Eastern Standard Time (EST, UTC−5) to Central European Time (CET, UTC+1). CET is 6 hours ahead of EST. Enter a time to see the instant result.
  • Ovulation Date Calculator
    Estimate your ovulation day and fertile window from the first day of your last period and your average cycle length. Free, fast, and easy to use.
  • Years to Months Calculator
    Convert years into months instantly. Enter any number of years and this free calculator returns the equivalent number of months (years × 12).
  • Months From Today Calculator
    Find the exact date a set number of months from today (or before today). Add or subtract calendar months with automatic month-end day clamping.
  • Months to Days Calculator
    Convert months to days instantly. Uses the average month length of 30.4375 days for accurate, year-aware results. Free online months-to-days calculator.
  • What Time to Leave for the Airport Calculator
    Find out exactly what time to leave for the airport. Subtract check-in, drive, and parking time from your flight departure to never miss a flight.
  • PST to IST Converter
    Convert PST (Pacific Standard Time, UTC−8) to IST (India Standard Time, UTC+5:30) instantly. Add 13 hours 30 minutes with automatic day rollover.
  • Hours, Minutes & Seconds Addition and Subtraction Calculator
    Add and subtract up to five time durations in hours, minutes and seconds, with a repeat multiplier. Get a normalized H:M:S total plus decimal hours, minutes and seconds.
  • EST to IST Converter
    Convert Eastern Standard Time (EST) to India Standard Time (IST) instantly. IST is 10 hours 30 minutes ahead of EST. Enter any time to convert.
  • Days Since and Until Calculator
    Count the days since or until any date. Find how many days before or after a reference date, with weeks and a signed past/future result.
  • Weeks Until Christmas Calculator
    Count the weeks until Christmas. Enter today's date and the year to see how many full weeks and days remain until December 25.
  • Unix Timestamp Calculator (Seconds & Milliseconds)
    Convert a Unix time in milliseconds to seconds, minutes and days since the epoch. Free Unix timestamp calculator with the exact floor formula explained.
  • Road Trip Time Calculator
    Estimate total road trip time from distance, average speed, and rest stops. Adds driving time plus break time for a realistic arrival estimate.
  • Seconds to HH:MM:SS Calculator
    Convert any number of seconds into hours, minutes, and seconds (HH:MM:SS) instantly. Free, accurate seconds-to-time converter with full breakdown.
  • IST to PST Time Converter
    Convert India Standard Time (IST) to Pacific Standard Time (PST) instantly. PST = IST − 13.5 hours. Enter the IST hour and minute to get the PST time.
  • EST to PDT Converter
    Convert Eastern Standard Time (EST) to Pacific Daylight Time (PDT) instantly. PDT = EST − 3 hours. Enter any hour and minute to see the Pacific time.
  • Zodiac Sign Compatibility Calculator by Birthdate
    Enter two birthdates to find your sun signs and an element-based zodiac compatibility score out of 100. Free, instant astrology match calculator.
  • Birthstone Calculator
    Find your birthstone by birth month. Instantly see your modern and traditional gemstone plus its meaning for any month from January to December.
  • Year Progress Calculator
    Find out what percentage of the year has passed for any date. Calculates day of year, days remaining, and year progress percent for leap and non-leap years.
  • How Many Weeks Pregnant Am I?
    Find out how many weeks and days pregnant you are from your last menstrual period (LMP). Enter your LMP and an as-of date to get gestational age instantly.

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