This application is a log and log volume calculator developed for those working in the forestry, logging and timber industry. It automatically calculates the volume of the log in cubic meters (m³) by receiving diameter (cm) and length (m) information from the user. Key features: User-friendly and simple interface Fast and accurate calculation Export (print) calculated results in Excel format View and save calculation history Infrastructure suitable for professional use The application provides convenience for businesses that buy and sell logs, field workers and timber producers. Since the calculated data can be exported to Excel format, reporting and archiving processes become very easy.