Date Calculator (Add / Subtract Days)
Date Calculator adds or subtracts days, weeks, months or years from any starting date and shows you the resulting date.
Last updated: July 2026
Add or subtract days, weeks, months or years from a date to find the resulting date. Free, instant date calculator.
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How to use Date Calculator (Add / Subtract Days)
- Pick a start date.
- Enter an amount and unit to add or subtract.
- Read the resulting date.
Frequently asked questions
Can I subtract as well as add?
Yes — use a negative amount or the subtract option to go backwards in time.
Which units are supported?
Days, weeks, months and years.
Is it private?
Yes, the calculation runs in your browser.
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