ZapToolsHash Generator (SHA-256)
Generate SHA-256, SHA-1 or SHA-512 hashes of any text — computed locally.
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What are hashes for?
- Integrity: verify downloads by comparing checksums
- Passwords: stored as hashes, never plaintext
- Git & blockchains: content addressing
SHA-256 is the modern standard; SHA-1 is legacy and shouldn't secure anything new.
Frequently Asked Questions
Can hashes be reversed?
No — cryptographic hashes are one-way by design.
Why do two similar texts give totally different hashes?
The avalanche effect: one changed character flips ~half the output bits.
Is hashing the same as encryption?
No. Encryption is reversible with a key; hashing is one-way.