Can a hash be reversed back to the original text?

No — cryptographic hashes are one-way functions; you cannot recover the original input from the hash output.

Which algorithm should I use?

SHA-256 is a strong, widely used general-purpose choice. SHA-1 is considered weak for security purposes and is included mainly for compatibility with legacy systems.

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Hash Generator (SHA-256 & More)

Generate SHA-1, SHA-256, SHA-384, or SHA-512 hashes of any text.

Text to hash

Algorithm

SHA-256 hash

Computed locally with the browser's Web Crypto API — nothing is sent to a server.

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About this tool

Compute a cryptographic hash of any text using SHA-1, SHA-256, SHA-384, or SHA-512 — useful for checksums, verifying data integrity, or generating deterministic identifiers.

How to use this tool

1
Enter your text
Type or paste the text you want to hash.
2
Choose an algorithm
Pick SHA-1, SHA-256, SHA-384, or SHA-512.
3
Copy the hash
The hex-encoded hash updates instantly as you type.

Frequently asked questions

Can a hash be reversed back to the original text?: No — cryptographic hashes are one-way functions; you cannot recover the original input from the hash output.
Which algorithm should I use?: SHA-256 is a strong, widely used general-purpose choice. SHA-1 is considered weak for security purposes and is included mainly for compatibility with legacy systems.

Developer Tools