How to Use This Tool
π Days Between Dates
Want to know how many days until your next birthday? Or how long it's been since a special anniversary? simply select a "Start Date" and an "End Date" to calculate the exact duration in days and weeks.
β Date Calculator
"What date is it 90 days from now?" or "What date was 100 days ago?" Enter a "Start Date" and the number of days to add (or subtract using a negative number) to find the exact date and weekday.
Interesting Date Facts
A day might seem like just 24 hours, but calendar calculations have some interesting quirks.
| Concept | Description |
|---|---|
| Leap Year | Happens every 4 years (mostly). February has 29 days, making the year 366 days long. This aligns our calendar with the Earth's orbit. |
| Common Year | February has only 28 days, and the year is 365 days long. |
| Weeks in a Year | A common year has 52 weeks and 1 day. A leap year has 52 weeks and 2 days. |
Frequently Asked Questions
Does the result include the start date?
Does this account for leap years?
Can I calculate past dates?
What is the maximum date range?
Why is the result different from what I expected?
How to calculate how many days someone has lived?
Is my data uploaded to the cloud?
Is this tool free?
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