Duration Calculator

  • Working Days Calculator
    Count the number of working (business) days between two dates, excluding Saturdays and Sundays. Inclusive of both start and end dates.
  • Time to Hours Calculator
    Convert hours, minutes and seconds into decimal hours instantly. Free time-to-hours calculator with total minutes and seconds breakdown.
  • Time Adder Calculator
    Add multiple time durations together. Enter hours, minutes and seconds for up to three entries and get the total in normalized h:m:s format.
  • Months Between Two Dates Calculator
    Find how many months are between two dates. Enter a start and end date to get the total months including a fractional part based on days.
  • Minutes Between Two Times Calculator
    Calculate the exact number of minutes between two times of day. Handles overnight spans automatically and shows the result in hours and minutes too.
  • Every Second Calculator
    Count every second between two date-times. Enter a start and end date and time to get the exact total seconds, minutes, hours and days.
  • Audiobook Speed Calculator
    Calculate how long an audiobook takes at 1.25x, 1.5x, 2x or any speed. See your adjusted listening time and how much time you save.
  • Expiration Date Calculator
    Find a product's expiration date by adding its shelf life in days to the manufacture date. Get the exact expiry date and days remaining instantly.
  • Reading Time Calculator
    Estimate how long a text takes to read. Enter word count and reading speed (WPM) to get reading time in minutes and seconds instantly.
  • Week Calculator
    Free week calculator to find how many weeks and days are between two dates. Get total weeks, days, and the exact week count fast.
  • Time Difference Calculator
    Calculate the difference between two times in hours, minutes, and seconds. Enter a start and end time to get the exact elapsed duration instantly.
  • Subtract Time Calculator
    Subtract hours, minutes and seconds from a start time. Get the resulting clock time in 24-hour format, wrapped correctly across midnight.
  • Minute Calculator
    Calculate the total number of minutes between a start and end time. Get the result in minutes, decimal hours, and hours & minutes instantly.
  • Day of the Year Calculator
    Find out which day of the year a given date is (1-366). Calculate the ordinal day number, days remaining, and total days, with full leap-year support.
  • Business Days Calculator
    Calculate the number of business (working) days between two dates. Excludes Saturdays, Sundays and a custom number of public holidays.
  • Drive Time Calculator
    Estimate how long a trip takes. Enter distance and average speed (mph or km/h) to get drive time in hours and minutes instantly.
  • English Learning Time Calculator
    Estimate how many weeks and months you need to learn English. Enter your current and target CEFR level plus weekly study hours.
  • Time Spent on Email Calculator
    Estimate how many hours you spend on email. Enter emails per day, minutes per email, and working days to see total hours, days, and workdays.
  • Weeks to Months Calculator
    Convert weeks to months instantly. Enter the number of weeks and get the equivalent in months using the average 4.34524 weeks per month.
  • Months to Years Calculator
    Convert months to years instantly. Enter a number of months and get the result in decimal years plus whole years and remaining months.
  • Minutes to Decimal Calculator
    Convert minutes to decimal hours instantly. Divide minutes by 60 to get decimal hours for timesheets, payroll, and billing.
  • Minutes to Days Calculator
    Convert minutes to days instantly. Enter any number of minutes to see the equivalent in days (and hours) using days = minutes ÷ 1440.
  • Hours to Days Calculator
    Convert hours to days instantly. Enter any number of hours and get the equivalent number of days using days = hours ÷ 24.
  • Days to Years Calculator
    Convert any number of days into years instantly. Uses 365.25 days per year to account for leap years. Free, fast, and accurate days-to-years converter.

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