Add Days to Date Calculator
Easily add or subtract days from any date. Find the resulting date instantly with this simple calculator.
Result
Adding 30 days to November 5, 2025 gives you Friday, December 5, 2025
Copy in common formats
2025-12-0512/05/202512-05-202505/12/2025December 5, 2025Friday, December 5, 2025You can also use this tool to subtract days from a date — just enter a negative number.
About This Tool
Use this free "Add Days to Date" calculator to find the exact date after adding or subtracting any number of days. Whether you're planning events, setting reminders, or managing projects, this tool makes it easy to calculate future or past dates instantly in your browser. Try common searches like add days calculator, add days online, and subtract days from date.
Frequently Asked Questions
How does the Add Days to Date calculator work?
It adds (or subtracts) the number of days you enter to your chosen start date using standard calendar arithmetic. Leap years and month changes are handled automatically.
Can I use negative numbers to subtract days?
Yes. Enter a negative value (like “-10”) to find a date 10 days earlier than your start date.
Does this calculator include weekends and holidays?
Yes, it includes all days by default. Let us know if you'd like to see a business day calculator.
What other date tools are available?
Days Between Dates Calculator • Time Between Dates Calculator