Days Since Date Calculator
Calculate how many days have passed since a specific date. Find the exact number of days, weeks, and months since any past date.
Select a date to see how many days have passed.
How It Works
This calculator counts the exact number of days between your selected date and today. It accounts for leap years and varying month lengths.
Use Cases
- Track days since a project started
- Count days since a personal milestone
- Calculate product age or warranty time
- Track sobriety or habit streaks
FAQ
Does this include the start date?
No. If you select yesterday, the result is 1 day. The start date itself is not counted.
Can I use a future date?
If you enter a future date, the calculator will show how many days remain until that date (as a negative value). Use the "Days Until" calculator for future dates.
Last updated: 2026-08-08