Date CalculatorsVarious useful calculators to handle all-kinds of date calculations Available Date Calculators: Add or Subtract Date Add to or Subtract from a Date (Days/Weeks/Months or Years) Convert date units Convert Hours/Days/Weeks/Months/Years to Seconds/Minutes/Hours Days Between Two Dates Calculate the Difference Between Two Dates. How many days, months, and years are between two dates? From date to date calculator Days until Date How many days, weeks, months and years until a Date. How Many Days Until My Birthday? Countdown to date Days until Holiday How many days, weeks, months and years until a Holiday. Countdown to Holiday Seconds converter Convert Seconds to Minutes/Hours/Days/Months/Years What Day of the Week is a day Find the day of the week of any date. What day of week was or will be a date How many days are in month How many days are on specific month. Month calendar Add or Subtract Time Time Calculator - Add or Subtract Days, Hours and Minutes from Now