Date calculator: add or subtract days

What's the date 30 days from now, in 6 months or in 10 business days? Calculated instantly.

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Business days don't account for public holidays.

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How to use

  1. Pick a start date (default: today).
  2. Choose plus or minus and the amount with a unit – days, weeks, months, years or business days.
  3. Read the target date including the weekday.

Calculate deadlines reliably

Payment terms (“net 30”), notice periods, delivery times or project milestones: no more counting on the calendar.

For months, the same day in the target month is used; if it doesn't exist (e.g. 31st → February), the last day of the month is taken. Business days are Monday to Friday – holidays aren't considered.

Frequently asked questions

Is the start day counted?

No. “Today + 1 day” is tomorrow.

Are holidays skipped for business days?

No, only weekends are skipped. Holidays vary by country and region.

What is January 31 plus 1 month?

February 28, or February 29 in leap years.