Developer ToolsFree

Hash Generator

Generate SHA-1, SHA-256, and SHA-512 cryptographic hashes from any text input. Uses the browser's native Web Crypto API — no third-party libraries, no server, completely private. Ideal for verifying data integrity and generating checksums.

SHA-1

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SHA-256

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SHA-512

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Frequently Asked Questions

What is SHA-256 used for?▼
SHA-256 is used in digital signatures, SSL/TLS certificates, blockchain, password storage (with salting), and data integrity verification. It produces a 256-bit (64 hex character) hash.
Can I reverse a SHA hash to get the original text?▼
No. Cryptographic hash functions are one-way — they are mathematically designed so the hash cannot be reversed to recover the input. The only way to 'crack' a hash is through brute force or rainbow tables.
Is my text uploaded to generate the hash?▼
No. Hashing uses the browser's built-in Web Crypto API. Your input never leaves your device and no network request is made.
When should I use SHA-512 instead of SHA-256?▼
SHA-512 produces a longer 512-bit hash and offers marginally higher collision resistance. Use it when storing sensitive data hashes or when interfacing with systems that specifically require SHA-512.