Which algorithm should I use?

SHA-256 is the standard choice for most cases (checksums, verifying file integrity). SHA-1 is considered weak for security and kept mainly for compatibility. SHA-512 gives a longer, more collision-resistant digest.

Can I reverse a hash back to the original text?

No — hashing is one-way. The only way to "check" a hash is to hash the same input again and compare.

Does this tool upload my text anywhere?

No — the hash is computed locally with the browser's Web Crypto API (crypto.subtle), nothing is sent to a server.

SHA-256 Hash Generator

Generate a SHA-256, SHA-1 or SHA-512 hash of any text.

SHA-1 SHA-256 SHA-512

Plain text

Output

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How it works

1
Pick an algorithm
Choose SHA-1, SHA-256 or SHA-512.
2
Enter your text
Type or paste the text you want to hash.
3
Copy the hash
The hex digest updates instantly — copy it with one click.

FAQ

Which algorithm should I use?: SHA-256 is the standard choice for most cases (checksums, verifying file integrity). SHA-1 is considered weak for security and kept mainly for compatibility. SHA-512 gives a longer, more collision-resistant digest.
Can I reverse a hash back to the original text?: No — hashing is one-way. The only way to "check" a hash is to hash the same input again and compare.
Does this tool upload my text anywhere?: No — the hash is computed locally with the browser's Web Crypto API (crypto.subtle), nothing is sent to a server.