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Hash Generator (SHA-256)

Generate SHA-256, SHA-1, and MD5 hashes from any text instantly.

Input Text

Enter some text above to generate hashes automatically.

All hashing is done in your browser using the Web Crypto API. No data is sent to any server.

About Hash Generator (SHA-256)

Free hash generator that computes SHA-256, SHA-512, SHA-1, and MD5 hashes from any text input using the Web Crypto API. Essential for verifying data integrity, generating checksums, comparing file signatures, and understanding cryptographic hashing. All hashing happens in your browser - your input text is never transmitted to any server. Includes copy buttons for each hash format.

Frequently Asked Questions

Which hash algorithm should I use?▾

For security purposes, use SHA-256 or SHA-512. MD5 and SHA-1 are considered cryptographically broken and should only be used for non-security checksums. SHA-256 is the most widely used secure hash algorithm today.

Can I reverse a hash back to the original text?▾

No. Cryptographic hash functions are one-way - you cannot reverse a hash to recover the original input. This is by design and is what makes hashing useful for password storage and data integrity verification.

What is the difference between MD5, SHA-1, and SHA-256?▾

MD5 produces a 128-bit (32 hex character) hash, SHA-1 produces 160-bit (40 hex characters), and SHA-256 produces 256-bit (64 hex characters). MD5 and SHA-1 are faster but have known vulnerabilities. SHA-256 is the current industry standard for security-sensitive applications like SSL certificates and Bitcoin.

What are common uses for hash functions?▾

Hash functions are used for verifying file integrity (comparing checksums), storing passwords securely (hashed, not plain text), digital signatures, blockchain transactions, data deduplication, and generating unique identifiers from content. The same input always produces the same hash output.

Is this hash generator free and private?▾

Yes, completely free with no signup. All hashing is performed in your browser using the Web Crypto API - your input text is never transmitted to any server. This makes it safe to hash sensitive data like passwords or API keys.