The calculation is intended for the purposes of geometric and strength designs of metal springs of various types and designs (15 types), subjected to static or cyclic loads. Application is developed in MS Excel, is multi-language and supports Imperial and Metric units. Is based on ANSI, ISO and DIN standards and includes a table of commonly used spring materials according to EN, ASTM/SAE, DIN, BS, JIS, UNI, SIS, CSN and others.