HashCalc

Hash CRC and HMAC calculator for Windows

HashCalc is a focused Windows utility for checking file integrity and generating cryptographic values from files, plain text, and hexadecimal strings. Its main purpose is simple: select an input, choose the calculation type, and compare the result with a known value, such as a checksum published by a software developer.

The program supports two main modes, Hash/Checksum and HMAC, giving it more flexibility than a basic checksum viewer. It includes 13 commonly used algorithms, including MD2, MD4, MD5, SHA-1, SHA-256, SHA-384, SHA-512, RIPEMD-160, PANAMA, TIGER, ADLER32, and CRC32. It also handles MD4-based custom hash data associated with eDonkey and eMule, which may be useful for users dealing with older file-sharing formats.

Everyday use is straightforward. For files, you choose the file input option and browse to the item you want to calculate. HashCalc can work with many file types, such as documents, archives, audio, and video, because it reads the file data rather than caring about the format itself. Smaller files can produce results quickly, while very large files may take much longer. The developer has tested files up to 15 GB, so it is not limited to tiny inputs.

The interface is the main drawback. It looks dated and feels more functional than modern, but it is still clear enough for beginners who only need to generate or verify a value. Because it works as a local desktop tool, it can be used without relying on a web service.

HashCalc is best for users who need a free, practical checksum and HMAC calculator without extra complexity. It is especially useful for verifying downloaded files, checking archives, or comparing text and hex values. If you want a polished modern interface, it may feel old, but for accuracy-focused checksum tasks, it remains a capable option.