Date Difference Calculator

Calculate days and weeks between two dates.

Date Difference Calculator helps you Calculate days and weeks between two dates. Use it to solve technical problems quickly when you need accurate intermediate values and final outputs for class, lab, or engineering work. The form is specific to this tool and captures inputs like Start date and End date, so required data is explicit before you run it. After running, review sections like Date Difference Inputs and Result to interpret results and verify they fit your real-world constraints. Save the exact inputs together with the result so teammates can reproduce and audit the output later.