RCsolver is a user-friendly software for the quick and accurate design of concrete members according to Eurocode specifications and US Standards. RCsolver provides an impressive 3-dimensional presentation of the concrete members along with the calculated tensile and shear reinforcement bars, as well as the full calculation procedure according to Eurocode amd ACI specifications, offering an incomparable advantage that promotes it to a great engineering-teaching and tool and a great tool for new engineers, as well as a valuable tool for engineers that wish to quickly check the calculations.