Leave calculator is an Android Application tool to calculate your eligible annual leave salary. The calculator has two options: Leave Salary calculator which you have to enter first day of your last vacation, first day of your current vacation, leave days per year and your basic salary and it will be automatically calculated. The other calculator is End Of Service calculator, you have to enter your joining date, last working date, leave days per year (21 days) and your basic salary. All these calculations are based on State of Qatar labor law.