Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
What Are Hash Functions?
A cryptographic hash function takes an input (or "message") and returns a fixed-size string of bytes. The output — the hash or digest — is unique to each unique input. Even a tiny change in the input produces a completely different hash.
Supported Algorithms
- MD5 — 128-bit hash. Fast but no longer considered secure for cryptographic purposes. Still used for checksums and data integrity.
- SHA-1 — 160-bit hash. Deprecated for security use but still found in legacy systems.
- SHA-256 — 256-bit hash from the SHA-2 family. Widely used in security certificates, blockchain, and password hashing.
- SHA-512 — 512-bit hash from the SHA-2 family. Provides the highest security level among these options.
How to Use This Tool
Type or paste text into the input field. All four hash values are generated simultaneously. Click Copy next to any hash to copy it to your clipboard. Enable "Live update" to see hashes recalculated as you type.
Frequently Asked Questions
Is my data secure?
Yes. All hashing is performed entirely in your browser using the Web Crypto API. No data is sent to any server.
Can I reverse a hash?
No. Cryptographic hash functions are one-way operations by design. You cannot recover the original input from a hash value.
Which hash algorithm should I use?
For security-sensitive applications, use SHA-256 or SHA-512. MD5 and SHA-1 are suitable for checksums and non-security uses only.