Subtract Time
Subtract days, hours, minutes, and seconds from a date/time.
Tool workspace
Subtracts days/hours/minutes/seconds from a start date/time in your browser’s local timezone. Shares duration parsing with Add Time.
How it works
Enter a start date/time and the duration parts to subtract. Blank duration fields count as zero.
Uses your browser’s local timezone. Shares the same duration engine as Add Time (opposite sign). Empty start or all-blank duration clears the result—no error.
Uses your browser’s local timezone. Shares the same duration engine as Add Time (opposite sign). Empty start or all-blank duration clears the result—no error.
Examples
- 2026-01-01T11:30 − 90 minutes → 2026-01-01T10:00:00
- Subtract 1 day to move to the previous calendar day
Privacy
Privacy: this tool processes date/times locally in your browser. We do not log or store what you enter. Login is not required.
FAQ
Are my times uploaded?
No. Subtraction runs entirely in your browser.
Is this the inverse of Add Time?
Yes. It uses the same duration parts with subtraction instead of addition.
Do I need an account?
No. All published tools work for guests without login.