Add days to a date, subtract days from a date, or calculate the number of days between two dates. This date calculator helps with schedules, deadlines, travel plans, billing periods, and everyday date math.
📅 Enter the number of days
The calculated date will appear here.
General disclaimer: This tool provides general estimates for informational purposes only. Results may vary based on your specific situation.
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Choose whether you want to add days, subtract days, or calculate the number of days between two dates. The calculator uses calendar days and instantly shows the result date or date difference.
🧮 Formula
Result Date = Start Date ± Number of Days
Days Between = End Date − Start Date
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A date calculator is a tool that helps you add days to a date, subtract days from a date, or calculate the number of days between two dates.
Yes. Select Add Days, choose a start date, enter the number of days, and the calculator will show the result date.
Yes. Select Subtract Days, enter a start date and number of days, and the calculator will show the earlier date.
Select Days Between, enter a start date and end date, and the tool will calculate the total number of calendar days between them.
No. This date calculator uses calendar days. It does not exclude weekends, federal holidays, or business holidays.
Yes. This date calculator is free to use and does not require registration.
