Generate SHA-256, SHA-1, and SHA-384 hash values from any text. Secure and private.
Note: MD5 is not included as it is cryptographically broken. Use SHA-256 for security purposes. All hashing is performed locally in your browser using the Web Crypto API.
A cryptographic hash function takes input data of any size and produces a fixed-size string of characters. The same input always produces the same hash, but even a tiny change in the input creates a completely different output. This makes hashes ideal for verifying data integrity.
This tool uses the browser's crypto.subtle.digest() API, which is a standards-compliant implementation of SHA algorithms.
A cryptographic hash function converts any input into a fixed-size string of characters. It's a one-way operation — you cannot reverse a hash to get the original input. Hashes are used for data integrity, password storage, and digital signatures.
| Algorithm | Output Size | Security | Use Case |
|---|---|---|---|
| MD5 | 128-bit (32 hex) | Broken | Checksums only |
| SHA-1 | 160-bit (40 hex) | Deprecated | Legacy systems |
| SHA-256 | 256-bit (64 hex) | Secure | Blockchain, SSL, passwords |
| SHA-384 | 384-bit (96 hex) | Very Secure | High-security applications |
A hash function is a mathematical algorithm that converts input data of any size into a fixed-size string of characters. The output (hash) is unique to the input - even a tiny change in input produces a completely different hash.
MD5 is cryptographically broken - researchers have demonstrated collision attacks where two different inputs produce the same MD5 hash. This tool provides SHA-256, SHA-1, and SHA-384 instead. SHA-256 is recommended for security purposes.
No. Hash functions are one-way operations. You cannot reverse a hash to recover the original input. The only way to verify is to hash the same input again and compare the results.
SHA-256 is used for digital signatures, SSL/TLS certificates, blockchain (Bitcoin), password storage, file integrity verification, and data authentication. It is the most widely recommended hash algorithm.
No. All hashing is performed locally in your browser using the Web Crypto API (crypto.subtle.digest). Your input is never transmitted to or stored on any server.
No, MD5 is cryptographically broken and should NOT be used for password storage. It's vulnerable to collision attacks and rainbow table lookups. Use bcrypt, scrypt, or Argon2 for password hashing.
SHA-256 is used in blockchain (Bitcoin), SSL/TLS certificates, digital signatures, file integrity verification, and Git commit hashes. It's the most widely used secure hash algorithm today.
No, hash functions are one-way — you cannot reverse a hash to get the original input. You can only verify by hashing the same input again and comparing the results.
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