Time and Date

  • Percentage of Year Completed Calculator
    Find what percentage of the year has elapsed for any date. Calculates the day of year, percent completed and remaining, accounting for leap years.
  • Countdown to Graduation Calculator
    Count down to graduation day. Enter the number of days remaining to instantly see weeks and months left until you graduate.
  • Next Leap Year Calculator
    Find the next leap year after any year. Enter a starting year to get the first following leap year and how many years away it is, using the Gregorian rule.
  • Cat Years to Human Years Calculator
    Convert your cat's age into human years instantly. First year = 15, second = +9, each year after = +4 human years. Free and accurate.
  • Countdown to the Weekend Calculator
    Find out exactly how much time is left until the weekend. Enter the current day and time to get a live countdown in days, hours and minutes.
  • Dog Years to Human Years Calculator
    Convert your dog's age into human years with the science-based logarithmic formula. Enter your dog's age to instantly see its equivalent human age.
  • Weeks and Days Between Two Dates Calculator
    Find the number of weeks and days between two dates. Great for pregnancy tracking, project timelines, and counting elapsed time fast and accurately.
  • EST to PST Time Converter
    Convert Eastern Standard Time (EST) to Pacific Standard Time (PST) instantly. PST is 3 hours behind EST — enter any time to get the PST equivalent.
  • GMT to EST Time Converter
    Convert GMT (UTC+0) to Eastern Standard Time (EST, UTC-5) instantly. Enter any 24-hour GMT time and get the exact EST equivalent in seconds.
  • CST to EST Time Converter
    Convert Central Time (CST) to Eastern Time (EST) instantly. Eastern Time is 1 hour ahead of Central Time. Enter any CST time and get the EST equivalent.
  • UTC to GMT Converter
    Convert UTC time to GMT instantly. Since GMT = UTC + 0, the time is identical — this tool confirms the conversion and shows hours, minutes, and offset.
  • Two Time Zone Meeting Planner
    Convert a meeting time from one UTC offset to another. Shows the local time in zone B and whether it falls on the previous, same, or next day.
  • Countdown to Time Calculator
    Find how long until a target clock time. Enter the current time and target time to get hours and minutes remaining, rolling to tomorrow if past.
  • Time From Distance and Pace Calculator
    Calculate total time from distance and pace. Enter your distance and pace per unit (min/sec) to get finish time in hours, minutes and seconds.
  • Epoch Seconds to Human Date Calculator
    Convert a Unix timestamp (epoch seconds) into a human-readable UTC date and time, with ISO 8601 output and full year/month/day/hour breakdown.
  • Milliseconds to HH:MM:SS Calculator
    Convert milliseconds to hours, minutes, seconds and HH:MM:SS format instantly. Free online milliseconds to time calculator with a full breakdown.
  • Hours Since a Time Calculator
    Calculate how many hours have passed since a past date and time. Instantly find the elapsed hours, days, and minutes from any moment until now.
  • Days Until My Birthday Calculator
    Count down to your next birthday. Enter your birth month and day to find out exactly how many days, weeks, and months are left until your big day.
  • Days Until Thanksgiving Calculator
    Count the days until Thanksgiving (US), the 4th Thursday of November. Enter any date to see exactly how many days, weeks, and days remain.
  • Days Since Date Calculator
    Count how many days have passed since a past date. Get total days, weeks, months and years elapsed up to today or any reference date.
  • Days Until Spring Calculator
    Count the days until the spring (March) equinox from any date. Enter today's date to see exactly how many days and weeks remain until spring begins.
  • Countdown to Summer Calculator
    Count the days, weeks and years until the summer solstice from any date. Supports Northern (June 21) and Southern (December 21) hemispheres.
  • Overtime Pay Hours Calculator
    Calculate weekly overtime and regular pay from total hours worked. Splits hours at 40, applies time-and-a-half (1.5×) overtime per US FLSA rules.
  • Days Until Halloween Calculator
    Count the days until Halloween (October 31). Pick any start date and instantly see how many days and weeks remain until the next spooky season.

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