What hash algorithms are supported?

MD5, SHA-1, SHA-256, and SHA-512. SHA-256 and SHA-512 are recommended for security.

Can I reverse a hash?

No, hashes are one-way functions. You cannot recover the original text from a hash.

Yes, this tool is completely free and works directly in your browser.

Generate cryptographic hashes from any text.

Text to Hash

MD5

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SHA-1

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SHA-256

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SHA-512

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A hash function takes any input and produces a fixed-length output. Small changes create completely different hashes.

32 hex character output. Fast but cryptographically broken. Only use for checksums, not security.

40 hex character output. Deprecated for security. Use for legacy compatibility or checksums only.

64 hex character output. Standard for modern security. Used in Bitcoin, SSL certificates, password storage.

128 hex character output. Highest security. Faster on 64-bit systems. Used for maximum security requirements.

Hash passwords before storing. Never store plain text passwords. Use SHA-256 or better with salt.

Generate hash of downloaded files. Compare to published hash to verify file wasn't corrupted or tampered.

Create unique identifiers for data. Detect if content has changed by comparing hashes.

Hash documents before signing. Ensures message integrity in cryptographic protocols.

Generate cache keys from URLs or data. Consistent hashing provides reliable cache lookup.

SHA-256 powers Bitcoin and many blockchains. Hash chains ensure immutable record keeping.