CalcHub

Date Calculator

Calculate days between dates, add or subtract time from a date, find the day of the week, and more.

Date Calculator

Solve various date-related problems with our comprehensive calculator.

Exclusions

How to Use This Date Calculator

Days Between Two Dates

Calculate the exact number of days between any two dates:

  1. Select "Days between two dates" from the dropdown
  2. Enter the start date
  3. Enter the end date
  4. Click "Calculate" to see the result

Add or Subtract from a Date

Find out what date it will be after adding or subtracting a specific time period:

  1. Select "Add or subtract from a date" from the dropdown
  2. Enter the base date
  3. Choose whether to add or subtract
  4. Enter the value (number)
  5. Select the unit (days, weeks, months, or years)
  6. Click "Calculate" to see the result

Find Day of the Week

Determine which day of the week a specific date falls on:

  1. Select "Find day of the week" from the dropdown
  2. Enter the date
  3. Click "Calculate" to see the result

Calculate Age from Birthdate

Calculate exact age in years, months, and days from a birthdate:

  1. Select "Calculate age from birthdate" from the dropdown
  2. Enter the birth date
  3. Optionally, enter a specific date to calculate age as of that date (defaults to today)
  4. Click "Calculate" to see the result

Common Date Calculations and Examples

Example 1: Days Until an Event

To find out how many days until a future event (like a wedding, vacation, or deadline):

  • Start Date: Today's date
  • End Date: The event date
  • Result: The number of days remaining until the event

Example 2: Contract Duration

To calculate how long a contract or subscription has been active:

  • Start Date: The start date of the contract
  • End Date: Today's date (or the end date)
  • Result: The duration in days

Example 3: Project Deadline

To find a project deadline that's 30 business days from today:

  • Base Date: Today's date
  • Operation: Add
  • Value: 30
  • Unit: Days
  • Exclude weekends: Checked
  • Result: The deadline date

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