📅 Date Difference Calculator — Days Between Two Dates

How many days between two dates? Exact calculation.

Find the total days, weeks and months between any two dates — for deadlines, events or project timelines.

How to Use?

  1. Select start and end dates.
  2. Press Calculate.
  3. See days, weeks and months.

How It Works

The difference between the two dates is taken in milliseconds and converted to days. Weeks = days ÷ 7, months ≈ days ÷ 30.44.

Frequently Asked Questions

Is the end date included?
This is an exclusive calculation — e.g. 1 Jan to 2 Jan is 1 day.
Are leap years accounted for?
Yes — the calculation uses calendar dates so leap years are automatic.
What if I enter reversed dates?
No problem — you always get a positive difference.

Last updated: 30 September 2026 · Category: Calculators