Action name: CalculateA simple calculator is provided. You can enter constant C-style expressions. Syntax of the expressions is the same is the syntax of IDC expressions. The result is displayed in the message window in three forms: hexadecimal,decimal and character.
All the names created during a disassembly may be used in these expressions. IDA can also pick up the name or number under the cursor and to store it into the input line.
View submenu. How to Enter a Number.