Move a date backward by a chosen number of days.
Tool · Last updated May 14, 2026
Subtract Days from a Date
Useful for finding a start date, prior checkpoint, or prep window.
Negative offsets are allowed, but this page keeps the UI simple by separating add and subtract pages.
2026-05-06
Negative offsets are allowed, but this page keeps the UI simple by separating add and subtract pages.
Result
Run the tool to see the answer here.
Quick take
Move a date backward by a chosen number of days.
How it works
Three quick actions, no wall of instructions.
Pick the base date
Choose the date you want to move.
Set the offset
Enter the number of days to add or subtract.
Confirm the new date
Use it for a deadline, reminder, or follow-up.
Sample input
Sample output
2026-05-06
Gotchas
Using the wrong adjustment type for the plan.
Forgetting that month-end rollovers can land on a different day than expected.
Skipping business-day mode when weekends should be excluded.
Quick answers
Short answers for the edge cases people usually ask about.
What does this do?
Adds or subtracts a date offset.
When should I use business-day mode?
When weekends should stay out of the result.
What should I verify?
Month-end rollovers and the direction you chose.