Hash Generator
Generates SHA-1, SHA-256 and SHA-512 checksums from input text.
Designed to process your files locally in your browser. Zerdly does not intentionally upload or store them unless this page says otherwise.
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MD5 is outdated and insecure; SHA-256 is the safe modern choice.
Related tools
- Base64 Encoder / Decoder
- CSV to JSON Converter
- JSON Formatter & Minifier
- URL Encoder / Decoder
- QR Code Generator
- Barcode Generator
Explore more in PDF, Image, File, Data & Developer Tools.
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.
Designed to run locally in your browser. Tool inputs are not intentionally stored by Zerdly unless stated otherwise.