Hash Generator
Generate cryptographic hashes using SHA-256, SHA-512, SHA-1, and MD5. Uses the Web Crypto API — everything runs in your browser.
Enter text above to generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes.
Supported algorithms
- SHA-256 — The industry standard for data integrity and blockchain
- SHA-512 — 512-bit variant offering higher security margin
- SHA-1 — Legacy algorithm, still used in Git commit hashes
- MD5 — Fast checksum, not recommended for security use
Frequently Asked Questions
What is a hash?
A hash is a fixed-length string generated from input data using a mathematical algorithm. The same input always produces the same hash, but you cannot reverse-engineer the original data from the hash. Hashes are used for data integrity verification, password storage, and digital signatures.
Which hash algorithm should I use?
For general integrity checks, SHA-256 is the standard. For password hashing, use bcrypt or Argon2 (not plain SHA/MD5). MD5 and SHA-1 are considered insecure for cryptographic purposes but are still used for checksums and non-security file verification.
Is MD5 still safe to use?
MD5 is NOT safe for security purposes (passwords, digital signatures) due to known collision vulnerabilities. However, it's still commonly used for quick file integrity checks and non-security checksums where collision resistance isn't critical.
Does this tool send my data to a server?
No. All hash computations use the Web Crypto API built into your browser. Your input text never leaves your device.
Privacy
Hash computation uses the Web Crypto API in your browser. Your input is never sent to any server or third party.