Generate SHA-256, SHA-1, SHA-384 and SHA-512 hashes from any text.
Hashing happens locally with the browser’s Web Crypto API — your text never leaves your device.
How do you generate a SHA-256 hash from text?
A hash generator creates a cryptographic digest using the SHA family (SHA-256, SHA-1, SHA-384, SHA-512), computed locally in your browser with Web Crypto. A hash is a fixed-length fingerprint of your input: the same input always gives the same hash, any change produces a completely different one, and it's one-way, so you can't recover the original text.
Understanding your result
A hash is a fixed-length fingerprint of your input. The same input always gives the same hash, while any change produces a completely different one. Hashes are one-way — you can’t recover the original text from them.
Assumptions and limitations
This tool hashes text you type or paste, not files, and the process is one-way, so you cannot recover the original input from a hash. A hash is a fingerprint, not encryption; identical inputs always produce identical hashes. It runs entirely in your browser, so nothing you enter is uploaded, but it cannot reverse or decrypt anything.
How to use this tool
- Paste or type the text you want to hash.
- Choose an algorithm (SHA-256 is the common default).
- Press Generate hash and copy the result.
Common mistakes to avoid
- Using SHA-1 for security-sensitive work — it’s considered weak; prefer SHA-256 or stronger.
- Expecting to “decrypt” a hash back to text — hashing is one-way by design.
About the Hash Generator (SHA-256)
The Hash Generator produces a cryptographic hash (digest) of any text using the SHA family of algorithms, computed entirely in your browser so the input is never sent anywhere.
Who should use this tool
For developers, IT professionals and privacy-minded users who need a digest of some text: verifying file or message integrity, comparing checksums, learning how hashing works, or generating a fingerprint for a value. Anyone wanting SHA-256, SHA-1, SHA-384 or SHA-512 output without installing software will find this handy.
Benefits
- Supports SHA-256, SHA-1, SHA-384 and SHA-512 algorithms
- Computes hashes entirely in your browser, input never uploaded
- Same input always yields the same digest for verification
- Any tiny change produces a completely different hash
Practical use cases
- Verifying that two pieces of text match exactly
- Comparing a computed digest against a published checksum
- Generating a stable fingerprint for a value
- Learning how the SHA family of hashes behaves
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Frequently asked questions
Is my text uploaded to a server?
No. Hashing uses the browser’s built-in Web Crypto API, so the text and the resulting hash stay on your device.
Why isn’t MD5 included?
MD5 is broken for security use and isn’t part of the Web Crypto standard. The SHA family is the modern, supported choice.
Can I get the original text back from a hash?
No. Hashing is deliberately one-way, so a digest cannot be reversed into the original input. It works as a fingerprint: the same text always produces the same hash, and any change produces a completely different one, but there is no key or method to recover what was hashed from the output alone.
Which algorithm should I choose?
SHA-256 is a sound default for general use and integrity checks. SHA-384 and SHA-512 produce longer digests for cases wanting extra length. SHA-1 is included mainly for compatibility with older systems, as it is considered weak for security purposes. Match your choice to whatever the system you are verifying against expects.