Date Calculator
Subtract Days From Date
Subtract days, weeks, months or years from a starting date to find an earlier date. Month-end dates are handled safely.
Subtract time from a date
How to go back from a date
Choose a start date, enter the amount to subtract, and pick the unit. Subtracting 90 days from 1 April 2025 returns 1 January 2025.
This is handy for finding deadlines that fall a set time before an event, such as a notice period or a refund window.
Month and year handling
Subtracting months or years clamps to the last valid day where needed — one month before 31 March becomes 28 February (or 29 in a leap year).
Frequently asked questions
How do I subtract days from a date?
Enter the start date, the number to subtract, and the unit. The earlier date is shown immediately.
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