Leave Days Calculator



Calculating leave days is a common task in various professional and personal settings. Whether you are an employer managing employee time off or an individual planning personal leave, having an accurate leave days calculator can simplify the process. In this article, we’ll provide a simple yet effective Leave Days Calculator using HTML and JavaScript.

How to Use

  1. Input the start date of the leave in the designated field.
  2. Input the end date of the leave in the corresponding field.
  3. Click the “Calculate” button to obtain the total leave days.


The formula for calculating leave days is straightforward:

This formula takes into account both the start and end dates, providing an accurate count of the leave days, inclusive of the start and end days.


Suppose an employee plans to take leave from December 15, 2023, to December 20, 2023.


Q1: Is the calculation inclusive of both the start and end dates?

A1: Yes, the formula includes both the start and end dates, ensuring an accurate count of leave days.

Q2: What format should the date be entered in?

A2: Date format should be in YYYY-MM-DD for accurate calculations, e.g., 2023-12-15.

Q3: Can this calculator handle overlapping months or years?

A3: Yes, the calculator accommodates overlapping months and years in its calculations.


The Leave Days Calculator presented here offers a simple yet precise solution for determining the duration of leave. By following the provided steps and formula, users can effortlessly calculate the number of leave days, aiding in efficient time management.

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