Date Calculator

Calculate the exact number of days, weeks, months, and years between any two dates. Free online date duration calculator for age, countdowns, and planning.

Select Dates

Select both start and end dates to see the difference.

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Date Difference Calculator — Days Between Any Two Dates

The Date Difference Calculator from SarkariTool gives you the precise duration between any two dates. Whether you need to count days for a legal document, track project timelines, or plan an event countdown — this tool delivers instant, accurate results.

How to Use

  1. Select a Start Date using the date picker.
  2. Select an End Date.
  3. Optionally check "Include End Date" to add 1 day to the total.
  4. Results appear instantly — total days, years, months, weeks, and hours.

Common Use Cases

  • Age Calculation — How many days old am I?
  • Exam Countdown — How many days until my exam?
  • Project Duration — How long did this project take?
  • Legal / Official — Exact day counts for contracts, notices, and filings.
  • Event Planning — Days until a wedding, anniversary, or holiday.

Privacy

All calculations happen in your browser. No date data is sent to any server or stored anywhere.

Frequently Asked Questions

Does this calculator account for leap years?
Yes. The total days count is exact and correctly handles leap years. The years and months breakdown uses standard calendar averages (365.25 days/year, 30.44 days/month) for approximate conversion.

Can I calculate my age with this?
Yes. Enter your birth date as the Start Date and today's date as the End Date. The result shows your exact age in days, along with approximate years, months, and weeks.

What does 'Include End Date' mean?
When checked, the tool adds 1 to the total days count to include the end date itself. For example, from January 1 to January 3 is normally 2 days, but with 'Include End Date' it counts as 3 days.

Can I enter future dates?
Yes. You can use future dates for both Start and End fields. This is useful for countdown calculations — for example, how many days until your exam, wedding, or deadline.

What if I swap the start and end dates?
The calculator uses the absolute difference, so it works correctly regardless of which date is earlier. You'll always get a positive result.

How accurate are the weeks and months values?
The total days count is exact. Weeks = days / 7. Months and years are approximate because calendar months vary in length (28–31 days). We use 30.44 days per month and 365.25 days per year as standard averages.

Is my data stored?
No. The calculation happens entirely in your browser using JavaScript. No dates are sent to any server.