Hash Generator Online — MD5, SHA-256, SHA-512
Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512) for any text input.
▶About Hash Generator
A cryptographic hash function converts input data of any size into a fixed-length string of characters. The output (called a digest or hash) is deterministic, meaning the same input always produces the same hash, but the process is computationally irreversible.
This free online hash generator computes MD5, SHA-1, SHA-256, SHA-384, and SHA-512 digests for any text input. All hashing runs entirely in your browser using the Web Crypto API and crypto-js — your data is never sent to a server.
Common use cases: generating checksums to verify file integrity, creating content-addressable identifiers for caching, comparing passwords hashes during development, validating API webhook signatures, and computing fingerprints for deduplication.
▶Frequently Asked Questions
▶What is a hash function?
A cryptographic hash function takes input data of any size and produces a fixed-length output (called a digest). The process is deterministic and one-way — you cannot reverse a hash back to the original data.
▶What is the difference between MD5 and SHA-256?
MD5 produces a 128-bit (32-character) hash and is fast but considered insecure due to collision attacks. SHA-256 produces a 256-bit (64-character) hash and is currently considered secure.
▶Is MD5 still safe to use?
MD5 should not be used for security-critical applications like password hashing. However, it is still acceptable for checksums, cache keys, and deduplication where collision resistance is not critical.
▶Can I hash a file with this tool?
This tool currently hashes text input. For file hashing, you can use command-line tools like sha256sum (Linux/Mac) or CertUtil (Windows).