How Many Days Calculator

Have a big day like a Birthday, Wedding or Vacation that you are looking forward to? Or would you like to count the time from a past event? This days between calculator will let you know how many days between 2 particular dates.

Note: Result doesn’t include end date as an additional day. ie: Tomorrow will display as 1 day away.

Days Between Dates Calculator

Common Uses of our Days Between Calculator


  • Event Countdown: Calculate the remaining days until an upcoming event or celebration, such as birthdays, anniversaries, or holidays.
  • Project Planning: Calculate the duration between project start and end dates to better manage timelines and allocate resources.
  • Trip Planning: Determine the number of days between departure and arrival dates to plan accommodations, transportation, and activities.
  • Age Calculations: Calculate the age in days between birth dates and current dates for age-related calculations or milestones.
    • Chronological Age
    • Age as of a Certain Past Date
    • Future Age on a Particular Date
  • Fitness Tracking: Determine the number of days between workout sessions or progress milestones to track fitness routines or goals.
  • Insurance Coverage: Calculate the number of days between policy start and end dates for insurance coverage or renewal purposes.
  • Lease Agreements: Determine the duration between lease start and end dates to manage lease terms and agreements.