Add or subtract days
Find the date before or after a number of calendar days.
Your saved tools stay in this browser.
Add or subtract days — workspace
Loading your tool…
How to use: Add or subtract days
Start with the example, or replace it with your own values.
Review Start date, Days (negative to subtract), then select “Get result”.
Read the result, then copy or download it. Edit any input to try again.
What you can do
- Find the date before or after a number of calendar days.
What you get
- A result you can review, copy or download. Numeric tools show labeled calculations; text tools show the transformed output.
What you need
- Start date
- Choose a valid calendar date.
- Days (negative to subtract)
- Enter a whole number (-100000–100000).
Try an example
- Start date
2026-01-01
- Days (negative to subtract)
30
Good to know
- Use a current browser with JavaScript enabled. Available formats and speed depend on your browser, device and input size.
Your work stays on your device
Your files and entered values are processed in your browser and are not uploaded for processing. The website and any required processing engines still download from the site.
Questions & answers
Is Add or subtract days free?
Yes. Add or subtract days is free to use and does not require an account.
Are my files or entered values uploaded?
Your files and entered values are processed in your browser and are not uploaded for processing. The website and any required processing engines still download from the site.
What result can I save?
A result you can review, copy or download. Numeric tools show labeled calculations; text tools show the transformed output.
What should I check before using the result?
Use a current browser with JavaScript enabled. Available formats and speed depend on your browser, device and input size.