Abstarct: Longshore sediment transport rate is very important in the field of coastal engineering. There are many methods for calculating sediment transport rate. Although famous quasi-experimental formulas such as CERC and Kamphuis are generally used in coastal engineering studies but there are some defects in their calculations and predictions, including these, these formulasonly have wave characteristics at the edge of the surfzone; whereas morphologic features are usually not, or to a limited extent. Also, the experimental coefficients contained in these formulas are taken from studies on the coasts of other countries and is consistent with the climate of the waves and sedimentation of these areas. Therefore, In this study, by evaluating some of those methods and selecting a few of the most common ones including CERC, Kamphuis, Del Valle and Afsharkave, using a limited waves and sediment properties data, the longshore sediment transport rate is calculated for six coasts of the Caspian Sea, for the warm and cold season sepratly and is compared with the result of the calculated sediment transport values of the cross shore profile. Finally, the calibration coefficient is embedded for each coast sepratly for each four methods for the both warm and cold season. In general, also for all the coasts of the Caspian Sea, in addition to the calibration of the CERC and Kamphuis formulas coefficients, is presented relations baxsed on surf similarity parameter and gradiation of sediments for experimental coefficient of the CERC formula.