Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes
Hash Generator computes five different hash digests of your text in one pass — MD5 and SHA-1 (older, faster, not collision-resistant), plus SHA-256, SHA-384 and SHA-512 via the Web Crypto API — so you can compare or use whichever algorithm you need without re-entering your text.
How to use Hash Generator
- 1
Paste the text you want to hash.
- 2
Click "Generate" to compute all five hashes at once.
- 3
Each algorithm's digest appears as a hex string.
- 4
Copy whichever hash you need.
Everything you need to know about hashing
What is a hash, and what is it for?
A hash function takes any input and produces a fixed-length string — the same input always produces the same hash, but you can't reverse a hash back into the original input. That one-way property is exactly what makes hashes useful for verifying data integrity or storing passwords without keeping the actual password.
Which algorithm should you use?
| Algorithm | Guidance |
|---|---|
| MD5 | Broken for security use — fine only for quick non-security checksums |
| SHA-1 | Also considered weak for security purposes today |
| SHA-256 | The current standard choice for most integrity/security needs |
| SHA-512 | Similar to SHA-256 with a longer output, used where that's specifically required |
A note on passwords specifically
Never hash passwords with a plain hash function like these for storage — proper password storage uses a dedicated, deliberately slow algorithm (bcrypt, Argon2, scrypt) designed to resist brute-force attacks, which general-purpose hash functions are not.
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Frequently Asked Questions
Which hash algorithm should I use?
SHA-256 is the common modern default for most use cases. MD5 and SHA-1 are still widely used for checksums and legacy compatibility, but both are considered cryptographically broken for security purposes like password storage.
Is the same text guaranteed to always produce the same hash?
Yes — hashing is deterministic, so identical input always produces an identical digest for a given algorithm, with no randomness involved.
Can a hash be reversed back into the original text?
No — hashing is one-way by design. These algorithms are meant for verifying that data matches (like a checksum), not for recovering the original input.
Does this tool send my text to a server?
Yes — it's sent to our servers to compute the hashes and the results are returned to you; nothing is stored.
Is this tool free to use?
Yes — completely free, with no signup and no usage limits for casual use.