Add/Subtract Days Calculator

Calculate future or past dates

How to Use

Choose your starting date using the date picker.

Input days, weeks, months, or years to add (positive) or subtract (negative).

Or click preset buttons for common intervals like 30 days, 6 months, etc.

See the calculated date with day of week.

Can I add and subtract at the same time?

Yes, you can enter values for days, weeks, months, and years. Positive values add time, negative values subtract time.

How are months added/subtracted?

When adding months, if the resulting day doesn't exist (e.g., January 31 + 1 month), it adjusts to the last day of the month (February 28 or 29).

What are the quick presets for?

Presets let you quickly jump to common intervals like "30 days from now" or "1 year from now" without manual entry.

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