Days Until Christmas
Countdown to Christmas.
Open →
Date & Time
Days Since Calculator
Count how many days have passed since a date — plus weeks, months and years.
Days since
—
Up to today.
| Weeks | — |
|---|---|
| Months (approx) | — |
| Years (approx) | — |
| That date | — |
Show our math
Enter your figures above to see the step-by-step working.
Uses today from your deviceEverything computed client-side — nothing leaves this page
How the Days Since Calculator Works
Enter a past date and this calculator counts how many days have elapsed from then until today, using your device’s current date. It’s handy for tracking milestones, anniversaries, sobriety, a project start, or simply “how long ago was that?” It also shows the span in weeks, months and years.
Because it works with real calendar dates, leap years and different month lengths are handled correctly. Enter a future date and it will tell you how many days away it is instead.
days since = today − the past date
Frequently Asked Questions
How do I count the days since a date?
Enter the date and the calculator subtracts it from today, giving the number of days elapsed, plus weeks, months and years.
Does it update automatically?
Yes. It uses your device’s current date, so the count is always current when you open it.
Can I count to a future date?
Yes — enter a future date and it reports how many days from now it is.
More From The Desk
Same plain method, different figuresChronological Age Calculator
Exact age for records.
Open →Half Birthday Calculator
Six months from birthday.
Open →Zodiac Sign Calculator
Your star sign.
Open →