Time and Date

  • Dog Age in Human Years Calculator
    Convert your dog's age into human years using the science-based logarithmic formula (16·ln(age)+31), with a linear puppy approximation under 1 year.
  • Weekly Time Card Calculator
    Add up your weekly work hours from daily clock-in/clock-out times and breaks. Handles overnight shifts and splits regular vs overtime hours over 40.
  • Average Speed from Time and Distance Calculator
    Calculate average speed from distance and time. Enter distance in km, miles, or meters plus hours, minutes, and seconds to get km/h, mph, and m/s.
  • Minutes Per Mile to MPH Calculator
    Convert your running or walking pace in minutes per mile to speed in miles per hour (mph). Enter minutes and seconds to get instant mph and km/h.
  • Decimal Hours to HH:MM Calculator
    Convert decimal hours to hours and minutes (HH:MM) instantly. Enter a value like 2.75 to get 2h 45m. Free, accurate decimal time converter.
  • Time Between Now and Future Date Calculator
    Calculate the exact time between now and a future date and time — total days, hours, minutes and seconds plus a clean day/hour/minute/second breakdown.
  • Time From Speed and Distance Calculator
    Calculate how long a trip takes from distance and speed. Enter distance and speed (km/h or mph) to get travel time in hours, minutes, and seconds.
  • Days to Hours Calculator
    Convert days to hours instantly with this free Days to Hours Calculator. Enter any number of days and get the exact total hours using hours = days × 24.
  • Intermittent Fasting Window Calculator
    Plan your intermittent fasting schedule. Enter your eating window start time and pick 16:8, 18:6, 20:4 or 14:10 to see when fasting begins and ends.
  • Time Zone Difference Calculator
    Calculate the time difference between two time zones using UTC offsets, and convert an origin local time into the destination's local time instantly.
  • How Many Days Old Am I?
    Find out exactly how many days, weeks, and hours old you are. Enter your birthdate and a reference date to calculate your age in days.
  • Seed Starting Date Calculator
    Find exactly when to start seeds indoors. Enter your last frost date and the weeks-before figure from your seed packet to get the sowing date.
  • Minutes to Seconds Calculator
    Convert minutes to seconds instantly. Enter any number of minutes and get the exact equivalent in seconds using seconds = minutes × 60.
  • Seconds to Hours Calculator
    Convert seconds to hours instantly. Enter any number of seconds and get the exact hours (and minutes) using hours = seconds ÷ 3600.
  • Meeting Time Across Time Zones Calculator
    Convert a meeting time from one city to another using UTC offsets. Instantly see the local time in City B and whether it falls on a different day.
  • Countdown to New Year Calculator
    Find out exactly how many days, hours, minutes and seconds remain until January 1 of next year from any chosen date and time.
  • Countdown to Date Calculator
    Countdown to any date and time. See the exact days, hours, minutes and seconds remaining — or how long ago a past date occurred.
  • Days Until Christmas Calculator
    Find out how many days until Christmas (December 25). Enter any start date for an instant countdown showing days and weeks until the holiday.
  • Time Until Due Date Calculator
    Find out how many weeks pregnant you are and how many days remain until your due date, based on your last menstrual period (LMP) and a 280-day gestation.
  • Work Hours Calculator with Lunch Break
    Calculate net work hours from clock-in and clock-out times after subtracting your lunch break. Supports overnight shifts. Free and instant.
  • Monthly Work Hours Calculator
    Calculate total monthly work hours from working days and hours per day, plus estimated monthly pay from your hourly rate. Fast and free.
  • UTC to China Standard Time Converter
    Convert UTC time to China Standard Time (CST, UTC+8) instantly. Enter UTC hour and minute to get the China time, with same-day or next-day indication.
  • UTC to EDT Converter
    Convert UTC time to Eastern Daylight Time (EDT) instantly. EDT = UTC − 4 hours. Enter the UTC hour and minute to get the matching US Eastern clock time.
  • Unix Timestamp to Time Converter
    Convert any Unix timestamp (epoch seconds) into a UTC date and time — year, month, day, hour, minute, second, and day of the week, instantly.

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