Date Calculator
Add or Subtract Days
Result Date
Tuesday, April 15, 2025
Day of Week
Tuesday
Days Between Dates
Total Days
166
Business Days
119
Weekends
47
Duration Details
Total Days
30
Business Days
21
Weekends
9
Other Time Calculators
Understanding Date Calculations
Date calculations are essential for project planning, scheduling, and many other applications. Our calculator helps you find future or past dates based on a starting date and number of days.
Calendar Days
Includes all days in the calculation, including weekends and holidays.
Business Days
Excludes weekends (Saturdays and Sundays) from the calculation.
Frequently Asked Questions
How are dates calculated?
The calculator adds or subtracts the specified number of days from the start date, taking into account months with different lengths and leap years.
How are business days calculated?
Business days exclude weekends (Saturdays and Sundays) from the calculation. For more accurate business day calculations, you should also consider holidays.