Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text in your browser.
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Examples
MD5 of a classic phrase
Input
The quick brown fox jumps over the lazy dog
Output
MD5: 9e107d9d372bb6826bd81d3542a419d6
SHA-256 of empty input rules
Input
abc
Output
SHA-256: ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad
About this tool
This free online hash generator computes MD5, SHA-1, SHA-256, SHA-384, and SHA-512 digests from any text — all at once, right in your browser. Type or paste your input and every hash updates live. Nothing is uploaded, so it's safe even for sensitive values.
How to use
- Type or paste your text (or click Sample).
- All five hashes are generated instantly below.
- Toggle Uppercase if you need capital hex.
- Click Copy next to the algorithm you want.
What hashes are for
A hash is a fixed-length fingerprint of data. The same input always produces the same hash, and even a one-character change produces a completely different result — which makes hashes ideal for verifying integrity (checksums for downloads), deduplicating data, and indexing. Hashing is one-way: you can't reverse a hash back to the original.
Which algorithm to use
- MD5 / SHA-1 — fast, but cryptographically broken. Fine for non-security checksums; never for passwords or signatures.
- SHA-256 and up — the modern default when security matters.
- Storing passwords? A raw hash isn't enough — use a dedicated, salted algorithm like bcrypt or Argon2. See our guide to strong passwords.
Working with encodings too? The Base64 encoder and Base64 guide cover the difference between encoding and hashing.
Frequently asked questions
Is this hash generator free?
Yes — it's a completely free online hash generator with no sign-up. Generate as many hashes as you like.
Is my text sent to a server?
No. Every hash is computed in your browser with no upload, so your text never leaves your device — safe for sensitive input.
Which hash algorithms are supported?
MD5, SHA-1, SHA-256, SHA-384, and SHA-512. All five are generated at once from the same input.
How are the hashes computed?
SHA-1, SHA-256, SHA-384, and SHA-512 use the browser's built-in Web Crypto API. MD5 (which Web Crypto omits) is computed locally in JavaScript. Text is hashed as UTF-8.
Should I use MD5 or SHA-1 for security?
No. MD5 and SHA-1 are broken for security purposes and should only be used for checksums or non-security comparisons. Use SHA-256 or stronger where security matters.
Can I get uppercase hashes?
Yes. Toggle Uppercase to display and copy the hex digest in capital letters.
Is a hash reversible?
No. Hashing is one-way — you can't recover the original text from a hash. Identical input always produces the identical hash, which is what makes hashes useful for verifying data.
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