Add or Subtract Days From a Date

What date is 30, 90, or N days (or weeks, months, years) from any date?

Quick answer: Add or subtract days from a date online. Free calculator to find what date is a certain number of days, weeks, or months away.

Resulting dateSat Oct 03 2026
Day of weekSaturday

computed locally — nothing leaves your browser

Project forward or backward from any date: deadlines 90 days out, warranty ends, notice periods, follow-up dates — with the weekday named.

How it works

  1. Set your starting date (or leave blank to use today).
  2. Enter the numerical amount to add (use a negative number to subtract).
  3. Select your unit (days, weeks, months, years) and see the exact resulting date.

Frequently asked questions

What is 90 days from today?

Leave the start date blank — it defaults to today — and the result updates instantly.

Why did Jan 31 + 1 month give Feb 28?

February has no 31st; calendar math clamps to the month's last day, the standard convention.

Can I subtract?

Yes — enter a negative amount to go backward.

Does it skip holidays?

No — it adds calendar days. For business-day addition that skips weekends, use the Add Business Days calculator.

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