Duration Calculator

  • Weeks to Days Calculator
    Convert weeks to days instantly. Enter any number of weeks and get the exact equivalent in days using the formula days = weeks × 7.
  • Seconds to Minutes Calculator
    Convert seconds to minutes instantly. Enter any number of seconds and get the exact minutes (seconds ÷ 60) plus a minutes-and-seconds breakdown.
  • Speech Time Calculator
    Convert word count to speaking time. Estimate how many minutes your speech or presentation will take at your chosen words-per-minute pace.
  • Time Ago Calculator
    Calculate how long ago a date and time was, broken into years, months, days, hours and minutes — or count time until a future moment.
  • Age in Days Calculator
    Find out exactly how many days old you are. Enter a birth date and an as-of date to get your age in days, weeks, months, and hours.
  • Age in Months Calculator
    Calculate your exact age in months from your birth date to today. Enter birth and current dates to get total complete months, plus years and months.
  • Age in Years Calculator
    Calculate your exact age in complete years from your birth date. Free age calculator showing total days lived and precise fractional age.
  • Time and Date Difference Calculator
    Calculate the difference between two dates and times in days, hours, minutes and seconds instantly with this free online duration calculator.
  • Time Conversion Calculator
    Convert time between seconds, minutes, hours, and days instantly. Enter a value, pick units, and get an accurate conversion plus the seconds equivalent.
  • Time to Decimal Calculator
    Convert hours, minutes, and seconds into decimal hours instantly. Free time-to-decimal calculator for payroll, timesheets, and billing.
  • Hours and Minutes Calculator
    Add or subtract two times in hours and minutes. Get the result in h:m, total minutes, and decimal hours instantly with this free calculator.

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