A Salary Calculator is a tool that helps individuals estimate their earnings based on various factors such as hourly wage, annual salary, and hours worked. It can also account for deductions like taxes and benefits, providing a clearer picture of take-home pay. These calculators are often available online and can be used by employees, freelancers, and job seekers to compare potential salaries. By inputting specific information, users can quickly determine their gross and net income, making it easier to budget and plan for financial goals.