A timesheet tool is a software application that helps track and record the time spent on tasks or projects. It allows users to log their working hours, categorize time entries, and generate reports. Benefits include accurate time tracking for billing and payroll, increased productivity through task insights, project transparency for monitoring progress, streamlined invoicing and payroll calculations, and valuable data analysis for resource allocation and project profitability. Timesheet tools offer efficient time tracking, project management, and reporting, leading to improved productivity, accurate billing, and informed decision-making.