# Calculate ## Description Open calculator. A simple calculator is provided. You can enter constant C-style expressions. Syntax of the expressions is the same is the syntax of [IDC expressions](/developer/idc/core-concepts/expressions.md). 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. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hex-rays.com/ida-actions/calculate.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.