Free online hash generator supporting SHA-1, SHA-256, SHA-384, and SHA-512 algorithms. Enter text or upload a file to compute hash instantly. Pure frontend browser processing. · Native Web Crypto API · No Server Uploads
Zero Dependencies·Local ComputationHash Computation
Hash Generator - Free Online SHA Hash Calculator Tool
Hash Generator is a free online tool for computing cryptographic hash values. It supports SHA-1, SHA-256, SHA-384, and SHA-512 algorithms. Enter any text or upload a file to compute its hash instantly. Perfect for file integrity verification, password validation, and digital signature verification. Uses the browser's native Web Crypto API (SubtleCrypto) — all computation is done locally, no data leaves your device.
Why choose Hash Generator
- SHA-1, SHA-256, SHA-384, SHA-512 support
- Text input with instant hash computation
- File upload with full file hash
- One-click copy to clipboard
- Local computation via Web Crypto API
FAQ
What hash algorithms are supported?
SHA-1, SHA-256, SHA-384, and SHA-512. These are implemented using the browser's native Web Crypto API for accuracy.
Are uploaded files sent to a server?
No. All file processing happens locally in your browser using the SubtleCrypto API. Files never leave your device.
What is a file hash?
A file hash is a fixed-length string generated by running file content through a hash algorithm. It's used for file integrity verification, software signature validation, and password storage.
What's the difference between SHA-256 and SHA-512?
SHA-256 produces a 256-bit (32-byte) hash, while SHA-512 produces a 512-bit (64-byte) hash. SHA-512 offers higher security but may be slightly slower on 32-bit systems.
Why no MD5 support?
MD5 has known collision vulnerabilities and is no longer considered secure. For security-sensitive applications, we recommend using SHA-256 or higher.
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