Hash Generator
Generates SHA-1, SHA-256 and SHA-512 checksums from input text.
Runs entirely in your browser — nothing is uploaded or stored.
How to use this calculator
- Paste your text.
- Press Generate for SHA-1, SHA-256 and SHA-512.
How it works
A hash turns any input into a fixed-length fingerprint. The same input always gives the same hash, but it can't be reversed — useful for checksums and verifying data. Computed in your browser with the Web Crypto API.
Common mistakes
- Treating a hash as reversible — you cannot get the original input back from a hash.
- Using a fast hash like MD5 or SHA-1 for passwords; they are for checksums, not secure storage.
Frequently asked questions
What is a hash used for?
A hash is a fixed-length fingerprint of data, used to verify integrity (did a file change?) and to index or compare content.
Is my input sent anywhere?
No — hashing runs in your browser using the Web Crypto API, so the text you enter never leaves your device.
What about MD5?
MD5 is outdated and insecure; SHA-256 is the safe modern choice.
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Cite this tool
Zerdly. (2026). Hash Generator. Retrieved from https://www.zerdly.com/tools/hash-generator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.