How to use the hash generator
- Type or paste your text.
- All five hashes update instantly — MD5, SHA-1, SHA-256, SHA-384, SHA-512.
- Click Copy on any row to grab that hash.
What is a hash?
A hash function turns any input into a fixed-length string of characters — a "fingerprint" of the data. The same input always produces the same hash, but you can't reverse a hash back to the original. Hashes are used to verify file integrity (checksums), index data, and store password representations. MD5 and SHA-1 are considered broken for security and should only be used for non-security checksums; use SHA-256 or stronger for anything security-related.
Benefits
- Generates MD5, SHA-1, SHA-256, SHA-384 and SHA-512 from any text instantly.
- SHA hashes use the browser’s built-in Web Crypto API for correctness.
- One-click copy on every hash.
- Runs entirely in your browser — nothing is uploaded.
Limitations to know
- MD5 and SHA-1 are broken for security and should only be used as non-security checksums.
- Hashing is one-way — you cannot reverse a hash back to the input.
- It hashes text you type, not uploaded files.
Common mistakes to avoid
- Using MD5 or SHA-1 for passwords or security — use SHA-256 or stronger.
- Expecting to "decrypt" a hash; hashes are not encryption.
- Assuming two different inputs can’t collide (rare, but MD5/SHA-1 collisions exist).
Alternatives
To encode rather than hash, use the Base64 Encoder; to test a password’s strength use the Password Strength Checker.
Last updated: August 2026 · Reviewed by the AI Toolbox editorial team.
Frequently asked questions
Is my text uploaded?
No — hashing runs entirely in your browser (the SHA hashes use the built-in Web Crypto API).
Which hash should I use?
For security, SHA-256 or SHA-512. MD5 and SHA-1 are fine only for quick non-security checksums.
Can I reverse a hash?
No — hashing is one-way by design. "Reversing" is only possible by guessing inputs.
Does the same text always give the same hash?
Yes — that's the whole point. Any change to the input changes the hash completely.