📅 Days Calculator
Use our free Days Calculator to calculate days between dates, add/subtract days from dates, or convert days to other time units. Perfect for project deadlines, event planning, or any day-based calculations.
CALCULATE DAYS BETWEEN TWO DATES
Start Date
End Date
Include Business Days Only
ADD OR SUBTRACT DAYS FROM A DATE
Start Date
Days to Add/Subtract
CONVERT DAYS TO OTHER TIME UNITS
How to Use the Days Calculator
1
Choose a mode — Days Between Dates to find the gap between two dates, Add/Subtract Days to offset from a date, or Convert Days to other time units
2
For Days Between Dates — select your start and end date; optionally toggle Business Days Only to exclude weekends from the count
3
For Add/Subtract Days — pick a base date and enter a positive number to go forward or a negative number to go back in time
4
For Convert Days — enter the number of days to instantly see the equivalent in weeks, months, years, and hours
5
Click Calculate to see your results, or use Clear to reset and start a new calculation