Date Difference

Key features

• Calendar-accurate years/months/days difference that respects varying month lengths (Jan 31 → Feb 28 counts as one month).
• Total days, total weeks plus leftover days, and total months plus leftover days.
• A business-days count of Mondays to Fridays within the range.
• Reversed dates are swapped automatically, with a clear badge — the result is never negative.
• Copyable one-line summary with both dates, the calendar difference and the day totals.

How it works

1. 1

   Set the start date

   It defaults to today; change it to any calendar date.

2. 2

   Set the end date

   It defaults to 30 days out, which is handy for countdown-style questions.

3. 3

   Read the calendar difference

   Years, months and days appear as three figures, with both dates printed underneath.

4. 4

   Scan the tiles

   Total days, weeks (+ remainder), months (+ remainder) and business days complete the picture.

5. 5

   Copy the summary

   One click grabs a sentence containing all the key numbers.

Tips for better results

• 💡Use business days for delivery and SLA estimates — but remember public holidays aren't excluded, only weekends.
• 💡For project deadlines, set the end date to the due date and the years/months/days readout doubles as a “time remaining” view.
• 💡The business-day scan caps at 200,000 days (about 548 years); multi-century ranges still show their total days correctly.
• 💡Swapping the two dates changes nothing — the tool reorders them and tells you it did.

Frequently asked questions