diff --git a/vpd-parser/memory_vpd_parser.hpp b/vpd-parser/memory_vpd_parser.hpp
index 27efafe..cbd44bb 100644
--- a/vpd-parser/memory_vpd_parser.hpp
+++ b/vpd-parser/memory_vpd_parser.hpp
@@ -58,6 +58,14 @@
      */
     kwdVpdMap readKeywords(Binary::const_iterator iterator);
 
+    /**
+     * @brief This function calculates dimm size from DIMM VPD
+     *
+     * @param[in] iterator - iterator to buffer containing VPD
+     * @return calculated data or 0 in case of any error.
+     */
+    auto getDimmSize(Binary::const_iterator iterator);
+
     // vdp file to be parsed
     const Binary& memVpd;
 };