Days until a date
Count calendar days left until a target date, or days since a target that has passed.
Formula
Days left = target date − reference date
Reference date = 2026-10-12 · Target date = 2027-01-01
How to use
- Set the reference date to your current date.
- Choose the target date.
- Read days left; negative means it has passed.
Examples
- From October 12, 2026 to January 1, 2027 there are 81 days.
Frequently asked questions
Is today set automatically?
No. October 12, 2026 is a fixed example; update it to your local date.
Is the target day included?
The result is elapsed days: tomorrow is 1 and the same date is 0.
Are holidays or weekends removed?
No. All calendar days count.
Sources
Updated: