Add or Subtract Days
What date is it X days from now?
Pick a start date, enter a number of days, and choose whether to add or subtract — ideal for deadlines, due dates, and planning ahead.
Please pick a start date and enter days.
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Total weeks
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Days difference
How it works
- We add or subtract the exact number of days from your start date using calendar arithmetic.
- Leap years, month lengths, and year boundaries are handled automatically.
- The result includes the weekday so you can see if it lands on a weekend.
Frequently asked questions
Can I use this for business days?
This counts calendar days. For business days, adjust for weekends manually.
What is the maximum number of days?
You can add or subtract up to 365,000 days (about 1,000 years).
Is the start date included in the count?
No — day 1 is the day after your start date, the standard convention.