Hashtab

There is a great free hash algorithm utility available from Implbits on this site. After you install it when you right click on a file or folder, you'll see that you have the option to generate a SHA-1, SHA-256, CRC-32, or CRC-64 hash value.

If you right click on a file and instead select Properties, you'll that a new tab is added which lists MD5, SHA-1, and CRC-32 hash values, and when you click on Settings, you can select up to two dozen other hash algorithms. On the File Hashes tab you can select and copy hash values.