Pedotransfer functions (PTFs) are mathematical models or equations that are used to estimate soil hydraulic properties and other soil parameters based on easily measurable soil properties such as texture, bulk density, and organic matter content. PTFs are commonly used in hydrology, soil science, and agriculture to predict soil properties at a given location without the need for costly and time-consuming laboratory testing. These functions are typically developed based on empirical relationships between soil properties and hydraulic parameters obtained from a database of soil samples. Overall, pedotransfer functions play a key role in facilitating the understanding and management of soil resources for various applications.