Days Until Date Calculator
Enter a target date to see exactly how many days remain — or have already passed.
Your calculation is performed in your browser.How it works
The calculator compares your target date with today's date. If the target is in the future, it counts the days remaining; if it has already passed, it counts the days elapsed since.
Formula & methodology
Days remaining = target date − today, using an exact whole-day calendar count.
Worked example
If today is September 13, 2026 and your target date is October 28, 2026, there are 45 days remaining.
Important notes
- —Today's date is always used automatically — you never need to enter it yourself.
- —Results are shown in plain language ("45 days remaining", "12 days ago") rather than raw negative numbers.