Hash Generator
Generate SHA-1, SHA-256, and SHA-512 hashes online. Free cryptographic hash tool.
How to Use Hash Generator
- 1Enter or paste your text into the input field.
- 2Select the hash algorithm you need (SHA-1, SHA-256, or SHA-512).
- 3The hash digest is computed and displayed in real time.
- 4Click "Copy" to copy the hash to your clipboard.
Frequently Asked Questions
What is a cryptographic hash?
A cryptographic hash function takes an input of any size and produces a fixed-length string of characters. The output (digest) is deterministic, meaning the same input always produces the same hash, and even a tiny change in the input produces a completely different digest.
Which hash algorithm should I use?
SHA-256 is the most widely recommended for general use. SHA-1 is considered weak and should only be used for non-security purposes like checksums. SHA-512 offers a larger digest and is preferred in some high-security contexts.
Can hashes be reversed?
No. Cryptographic hash functions are one-way by design — you cannot recover the original input from its hash. This property makes them useful for password storage, data integrity checks, and digital signatures.
Is my data sent to a server?
No. All hashing is performed locally in your browser using the Web Crypto API. Your data never leaves your device.
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