100 days after 1 March 2026
Start on 1 March 2026 and add 100 days.
You land on Tuesday, 9 June 2026.
Days from today calculator
Type a number of days. Positive moves forward, negative moves back. Change the start date if today is not the date you meant.
Use a minus to count backward.
You land on
—
Choose a start date.
Next: Days between dates calculatorThe number of days between two dates.
Civil dates on the Gregorian calendar. The start date is day zero. No time of day.
How this is calculated
- Step 1
A start date
Today, unless you type another date.
- Step 2
A count
Positive days move forward. Negative days move back.
- Step 3
The landing date
The calendar date and the weekday. Weekends are not skipped.
Calendar shift
result = start + N calendar days
| start | The date you count from. Defaults to today. |
|---|---|
| N | Whole days to add. A negative N counts backward. |
Adding 1 lands on tomorrow, not today. Adding 0 stays on the start date.
Leap days are included when the span crosses 29 February. Daylight saving and time zones never change the result, because these are dates rather than instants.
If you already know both dates and want the size of the gap, use days between dates.
Worked examples
Loading an example fills the tool and scrolls you back to the result. Money examples stay in US dollars on the page. The symbol you picked changes; the numbers do not convert.
90 days before 1 March 2026
Start on 1 March 2026 and add −90 days.
You land on Monday, 1 December 2025.
One week after 1 May 2026
Start on 1 May 2026 and add 7 days.
You land on Friday, 8 May 2026.
Embed this calculator
Paste this on a page you control. The frame shows the tool only. The formula stays on this page, and the frame links back here.
<iframe src="/embed/days-from-today" title="Days from today calculator" width="100%" height="720" style="border:0;max-width:42rem" loading="lazy"></iframe>Questions
Does the count include today?
No. Today is day zero. One day from today is tomorrow.
Can I start from a date that is not today?
Yes. Change the start date, or use Today to snap it back. The worked examples use fixed dates so the written answer does not move overnight.
What happens in a leap year?
29 February is a normal calendar day when it exists. A 366-day shift from 1 January in a leap year lands on 1 January next year only if you counted that extra day. The tool uses the real calendar, not a 365-day year.
How do I measure a gap I already know?
That is the days between dates calculator. This page answers the opposite question: you know the number of days and want the date.