Date Add / Subtract
Add or subtract any number of days, weeks, months or years from a date.
Quick answer: Add or subtract any number of days, weeks, months or years from a date.
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Frequently asked questions
- Is the date calculator free?
- Yes — free with no signup.
- How are months handled?
- We use calendar months — adding 1 month to Jan 31 lands on Feb 28/29.
- Are my dates uploaded?
- No — every calculation runs in your browser.
- Can I subtract?
- Yes — use negative numbers in any field.
- What about leap years?
- Handled automatically — Feb 29 is treated correctly when present.