Days Until Calculator
By using our calculators, you agree to our Terms of Use.
Count whole days from a start date until any future target — swap dates for events already passed.
Target & start date
Days remaining
147
About 21 weeks until 2026-12-25
- Target date
- 2026-12-25
Related calculators
Counting days until a date
A days-until countdown measures whole calendar days between an as-of date and a target date. Pick today as the as-of date for a live countdown to a wedding, vacation, deadline, or holiday.
When the target date has passed, the calculator shows zero days remaining rather than a negative count — check the summary for whether the event is past. For pregnancy due dates, the pregnancy countdown tool adds gestational context.
Example: as of July 31, 2026 until December 25, 2026 → 147 days remaining (about 21 weeks). Change the target to any future milestone.
Common questions
Are start and target dates included?
The count is the rounded day difference between the two dates. Same-day events show zero days remaining.
What if the date already passed?
Days remaining clamp to zero. Use date difference calculator if you need how long ago an event was.
Does this skip weekends?
No — every calendar day counts. Use the business-days calculator for weekday-only spans.