Hash Generator
Generate MD5, SHA-1, SHA-256, and other hash values.
How to use this tool
- Enter your text in the input field.
- Click 'Generate Hashes' to compute all hash values.
- View hashes in MD5, SHA-1, SHA-256, SHA-384, and SHA-512 formats.
- Click the copy button next to any hash to copy it.
About this tool
Hash Generator is an online, free tool that creates cryptographic hash values from text input. No registration required! Hashes are one-way functions that convert data into fixed-size strings. They're used for password storage, file integrity verification, digital signatures, and data comparison. Note: MD5 and SHA-1 are considered weak for security purposes; use SHA-256 or higher for sensitive applications.
Frequently asked questions
What is a hash and what is it for?
A hash is a fixed-length fingerprint of some data, produced by a one-way function. The same input always gives the same output, a one-character change gives a completely different output, and the original cannot be recovered from it. That makes hashes useful for verifying that a file arrived intact, comparing two things without storing either, and detecting whether something has changed.
What is the difference between MD5, SHA-1 and SHA-256?
They are different algorithms with different output sizes and different security standing. MD5 gives 128 bits and is broken: attackers can construct two different inputs with the same hash on ordinary hardware. SHA-1 gives 160 bits and is also broken in practice. SHA-256, SHA-384 and SHA-512 are part of the SHA-2 family and remain sound. Use SHA-256 or better for anything where security matters.
Can a hash be reversed or decrypted?
Not by design. Hashing is one-way, so there is no decrypt operation. What attackers do instead is guess: hash enormous lists of likely inputs and look for a match. That is why short or common inputs are recoverable in practice even though the function itself cannot be inverted.
Is it safe to hash a password with this tool?
For learning and for checksums, yes. For storing real passwords, no, and not because of this tool. A plain fast hash of a password can be brute-forced at enormous speed. Real password storage needs a deliberately slow algorithm with a per-user salt, such as bcrypt, scrypt or Argon2.
Why do MD5 and SHA-1 still exist if they are broken?
Because they are still fine for non-adversarial uses. Checking that a download was not corrupted in transit, deduplicating files, and generating cache keys all rely on accidental collisions being vanishingly unlikely, which is still true. What is no longer true is that an attacker cannot deliberately construct one.
How do I verify a file checksum?
Hash the content and compare it character by character with the checksum the publisher listed. If a single character differs, the data is not the same. This confirms integrity, not authenticity, unless the published checksum itself came over a trusted channel.
Is my input sent to a server?
No. Hashes are computed in your browser using the Web Crypto API. Nothing you type is uploaded, stored or logged.