nirsoft.net
HashMyFiles is a small utility that calculates MD5, SHA1, CRC32, SHA-256, SHA-512 and SHA-384 hashes of one or more files. The hash list can be copied to the clipboard or saved to text, HTML or XML files, and the utility can be launched from the Windows Explorer context menu to display hashes of a selected file or folder. It works on Windows 2000 through Windows 11.