Date Calculator
Calculate days between dates, add or subtract days from any date, and find the day of the week. Free date calculator with calendar pickers.
📅 Days Between Two Dates
Frequently Asked Questions
What is the difference between calendar days and business days?▼
Calendar days include all days of the week (Monday through Sunday). Business days only include weekdays (Monday through Friday), excluding weekends. Business days are useful for work deadlines and project planning.
How many days are in a typical year?▼
A common year has 365 days. A leap year has 366 days, occurring every 4 years (years divisible by 4, except century years not divisible by 400).
What is the Unix timestamp?▼
Unix timestamp is the number of seconds since January 1, 1970 (UTC). It's a common way to store dates in programming. This calculator shows the timestamp for your dates.
Can I calculate future dates for planning?▼
Absolutely! Use the 'Add/Subtract Days' mode to calculate future dates for project deadlines, event planning, or counting down to special occasions.
How accurate is the day of week calculation?▼
The day of week calculation is 100% accurate for all dates from year 1 to year 9999, based on the Gregorian calendar system.