Hash Generator
Generate cryptographic hashes using the Web Crypto API. Real-time computation.
How to Use
Type or paste your text in the input box. All four hash values (SHA-1, SHA-256, SHA-384, SHA-512) are computed instantly as you type. Click "Copy" next to any hash to copy it.
Features
- Real-time hash computation as you type
- Supports SHA-1, SHA-256, SHA-384, and SHA-512
- Uses the native Web Crypto API for maximum performance
- Shows byte count for each hash
- One-click copy for any hash value
Frequently Asked Questions
What is SHA-256?
SHA-256 (Secure Hash Algorithm 256-bit) is a cryptographic hash function that produces a fixed 256-bit (32-byte) hash value. It's widely used for data integrity verification, digital signatures, password storage, and blockchain.
Is SHA-256 reversible?
No. SHA-256 is a one-way function — you cannot recover the original input from the hash. This makes it suitable for password hashing and data integrity checks.
Which hash algorithm should I use?
For most purposes, SHA-256 is recommended. SHA-1 is considered weak and should be avoided for security-critical applications. SHA-384 and SHA-512 offer larger hash sizes for applications requiring extra security margin.