SHA-256 Hash Generator — Free Online
Generate SHA-256 hashes from text or files instantly. Uses the browser's native Web Crypto API for secure hashing. Free and private.
Compute SHA-256 hashes for text strings or files directly in your browser. SHA-256 is the most widely used hash algorithm for file verification, digital signatures, and password hashing. No data is sent to any server.
🔒100% Private — Your files never leave your device. All processing runs locally in your browser.
How It Works
Type or paste text, click Generate Hashes. The tool computes SHA-1, SHA-256, SHA-384, and SHA-512 hashes using the Web Crypto API — entirely in your browser.
Hashing is a one-way function: you can generate a hash from any text, but you cannot reverse a hash back to text. This makes hashes useful for verifying file integrity, storing password fingerprints, and creating digital signatures.
Features
- ✓SHA-1, SHA-256, SHA-384, SHA-512 algorithms
- ✓Uses native Web Crypto API (browser-built-in)
- ✓One-click copy for each hash value
- ✓Instant computation — no server round-trip
- ✓Handles long text inputs
- ✓Hexadecimal output format
Frequently Asked Questions
SHA-256 (Secure Hash Algorithm 256-bit) produces a unique 64-character hexadecimal fingerprint for any input. It is used for file integrity verification, blockchain, and security applications.