Date Before Date Calculator

Result
The resulting date will appear here (dd-mm-yyyy).

About This Tool

Instantly find the exact date that falls a certain number of days before a given date. Enter your starting date in dd-mm-yyyy format and specify how many days to subtract. The result updates live as you type and accounts for month lengths and leap years automatically.

How to Use

  1. Type the starting date in the Input Date field using dd-mm-yyyy format.
  2. Type the number of days to go back in the Days Before field (positive whole number).
  3. The result will appear instantly below, showing the sentence and a highlighted date.
Examples
Input
Date: 15-01-1990
Days Before: 1
Output
The date 1 day before 15-01-1990 is:
14-01-1990
Input
Date: 01-03-2024
Days Before: 1
Output
The date 1 day before 01-03-2024 is:
29-02-2024

Tips

  • Use leading zeros for day and month (e.g., 05-09-2025).
  • Only positive integers are accepted for Days Before.
  • Result is always in dd-mm-yyyy format.