Day Counter
Count the number of days since (or until) a date — useful for tracking streaks, milestones, or how long something has been going on.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter a reference date and a date to count up to, and this calculator finds the number of days between them.
Defaults to today's date.
Your result
255
Days counted
Total weeks (whole)36
AI explanation
Formula
Days counted = count-up-to date − reference date (+1 if including today)Worked example
Days since 2026-01-01, including today
| Field | Value |
|---|---|
| Reference date | 01-01-2026 |
| Count up to | 12-09-2026 |
| Include today in the count | true |
| Days counted | 255 |
| Total weeks (whole) | 36 |
Assumptions
- Defaults to including today's date, matching how most streak/milestone counters are expected to work (day 1 is the reference date itself).
Frequently asked questions
What is this useful for?
Tracking a streak (days since quitting a habit, days since a milestone), or simply counting how many days have passed since a reference date.
Why does today count as day 1 by default?
Most streak trackers count the starting day itself as day 1 — uncheck "Include today" if you'd rather count only the days that have fully elapsed since the reference date.
How is this different from the Days Between Dates Calculator?
Same underlying calculation — this page is framed for counting up from a fixed reference date, defaulting to an inclusive count.